Practice Test

Q1) The most significant value of vegetative propagation is that: Show Answer

Q2) When mature anthers of Datura inxonia are cultured in a culture medium supplemented with phytohormone named kinetin, coconut milk and plum juice, several embryos can be obtained floating inside the microsporangia. These embryos can develop into plants that are: Show Answer

Q3) Use of stem cutting is common method of vegetative propagation. Juvenile wood grows roots more readily than mature wood. The superior rooting of juvenile cutting may be due to: Show Answer

Q4) Grafting is used to propagate plants because: Show Answer

Q5) Vegetative type of reproduction means: Show Answer

Q6) Micropropagation is based on: Show Answer

Q7) Grafting is attempted in those plants which show: Show Answer

Q8) Improved method of grafting is: Show Answer

Q9) The separation of single cell from the rest of the callus is: Show Answer

Q10) Konar and Nataraja demonstrated callus i.e., embryoids in buttercup also develops from: Show Answer

Q11) Gall knot or Gall nuts on plants is produced by: Show Answer

Q12) Witches broom on woody plants in caused by: Show Answer

Q13) Mistletoes, Viscum album plants having yellowish flowers and white berries is: Show Answer

Q14) Any cell, tissue, or an organ removed from a plant for the purpose of culturing is called: Show Answer

Q15) An alkaloid which can be utilized to transform haploid plant into homozygous diploid plant is: Show Answer

Q16) The two enzymes utilized to isolate protoplasts from tissues or organs are: Show Answer

Q17) Fusion product of protoplast from the differect plants is termed: Show Answer

Q18) Potentiality of vegetative cells other than zygote to give rise to an independent plant is known as: Show Answer

Q19) First androgenic haploid was raised by: Show Answer

Q20) Microbes in the culture chamber are killed most suitably by: Show Answer

Q21) Non-pathological erratic growth of a plant tissue involving uncontrolled cell divisions is designated as: Show Answer

Q22) Even after killing the generative cell with a laser beam, the pollen grains of tobacco germinate and issue a normal pollen tube because: Show Answer

Q23) The entry of pollen tube into embryo sac through the integuments is termed as: Show Answer

Q24) 512 microspores will be formed following meiosis of how many spores? Show Answer

Q25) An example of triploid tissue is: Show Answer

Q26) Triploid plants can be obtained from the culture of: Show Answer

Q27) After fertilization synergids and antipodal cells form: Show Answer

Q28) Pollen grain in angiosperm develops from: Show Answer

Q29) The nucellus of the ovule is: Show Answer

Q30) In case of angiosperms, embryo sac represents: Show Answer

Q31) The anther wall consists of four wall layers where: Show Answer

Q32) How many pollen grain mother cells should undergo meiotic division to produce 64 pollen grains? Show Answer

Q33) Emasculation is achieved by: Show Answer

Q34) Pollen is produced in the: Show Answer

Q35) A flower part whose primary role is protection, is the: Show Answer

Q36) In a fully developed male gametophyte the number of nuclei is: Show Answer

Q37) The mature anther wall comprises an epidermis followed by a layer of radially elongated cells with fibrous bands of callose called endothecium whose function is: Show Answer

Q38) The innermost layer of anther is tapetum whose function is: Show Answer

Q39) Ovule represents: Show Answer

Q40) Stalk of the ovule is called as: Show Answer

Q41) Mature ovules are classified based on the funiculus. If micropyle comes to lie close to the funiculus the ovule is termed as: Show Answer

Q42) In a bisexual flower when the gynoecium matures earlier than anther, it is called as: Show Answer

Q43) Plants which flower only once in the life are termed as: Show Answer

Q44) Translators are found in: Show Answer

Q45) Simultaneous meiotic division of microspore mother cells leads to: Show Answer

Q46) When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be: Show Answer

Q47) Double fertilization was first described by: Show Answer

Q48) Secondary nucleus after fusing with one of the male gametes develops into: Show Answer

Q49) The fusion of male gamete with secondary nucleus of embryo sac is process of: Show Answer

Q50) The fertilization occurs in the: Show Answer

Q51) Study of formation, growth and development of a new individual generally from an oospore is known as: Show Answer

Q52) If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosome in each cell of the root will be: Show Answer

Q53) In ovule meiosis occurs in: Show Answer

Q54) The female gametophyte of a typical dicot at the time of fertilization is: Show Answer

Q55) Development of embryo sac from any cell of nucellus is called: Show Answer

Q56) The method of fertilization (in an angiosperm) in which the pollen tube enters the ovule by way of micropyle is known as: Show Answer

Q57) Simple fruit develops from: Show Answer

Q58) Parthenocarpic fruit is: Show Answer

Q59) After fertilization ovary is converted into: Show Answer

Q60) Perisperm in angiospermic seed is derived from: Show Answer

Q61) The entry of pollen tube into the embryo sacs through the chalaza is called: Show Answer

Q62) Ovule is ategenic in: Show Answer

Q63) Vivipary is of common occurrence in: Show Answer

Q64) Polyembryony commonly occurs in: Show Answer

Q65) The main embryo develops from the structure formed as a result of fusion of: Show Answer

Q66) Function of obturator for any ovular structure is to: Show Answer

Q67) The term xenia denotes the effect of the: Show Answer

Q68) Polygonum type of embryo sac is: Show Answer

Q69) 256 microspores will be formed as a result of reduction division in how many microspore mother cells: Show Answer

Q70) Perisperm is: Show Answer

Q71) Which of the following statement is true for the pollen tube: Show Answer

Q72) In Angiosperms free nuclear division occurs during: Show Answer

Q73) In Albuminous seeds, food is stored in: Show Answer

Q74) The seed coat develops from the: Show Answer

Q75) Which of the following is required for germination of seeds? Show Answer

Q76) Fusion of egg with male gamete is called: Show Answer

Q77) In angiosperms the oospore on development produces: Show Answer

Q78) For the formation of 50 zygotes in a tobacco plant, the minimal number of meiosis involved would be: Show Answer

Q79) A female gametophyte would be found in the: Show Answer

Q80) Pollen grain gets nutrition from: Show Answer

Q81) In case of angiosperms, pollen grain produces: Show Answer

Q82) Sexual reproduction in which morphologically and physiologically similar gametes fuse is termed as: Show Answer

Q83) A normal plant suddenly started reproducing parthenogenetically. The number of chromosomes of the second generation as compared to parent plant will be: Show Answer

Q84) If cotyledons remains below soil during germination, it is: Show Answer

Q85) Seed are dispersed by: Show Answer

Q86) Micropyle of ovule allows entry of: Show Answer

Q87) Cotyledons form the first pair of leaves in: Show Answer

Q88) Protective covering of seeds is called: Show Answer

Q89) The number of germ pores in dicot plants is generally: Show Answer

Q90) When seeds develop without meiosis and syngamy, the phenomenon is: Show Answer

Q91) The inner integument of majority of the dicot seed is: Show Answer

Q92) Epigeal seed germination is found in: Show Answer

Q93) Which of the following statements is correct? Show Answer

Q94) Monosporic, 8 nucleate embryo sac is called: Show Answer

Q95) An example of triploid tissue is: Show Answer

Q96) If soaked pea seeds are kept in four separate flasks, best germination will be in the flask having: Show Answer

Q97) Which of the following plants are likely to have wider range of distribution? Show Answer

Q98) During seed germination: Show Answer

Q99) In albuminous seeds the food is stored mostly in: Show Answer

Q100) Wind dispersed seeds have: Show Answer

Q101) Seed germination is hypogeal in: Show Answer

Q102) In angiosperms normally after fertilization: Show Answer

Q103) The bisporic type of embryo sac development is characterised by the: Show Answer

Q104) Grafting is not possible in monocots as they: Show Answer

Q105) Inflorescence with flattened axis, sessile flowers and involucre is: Show Answer

Q106) Hypanthodium occurs in: Show Answer

Q107) An edible inflorescence is: Show Answer

Q108) Umbel inflorescence is found in: Show Answer

Q109) A plant with both male and female flowers is: Show Answer

Q110) Cruciform corolla occurs in: Show Answer

Q111) Thalamus is: Show Answer

Q112) Heaping of earth around base of stem in Potato is meant for: Show Answer

Q113) Bulbils occur in: Show Answer

Q114) Embryo sac is: Show Answer

Q115) 8-nucleate embryo sac is: Show Answer

Q116) A mature male gametophyte is formed from pollen mother cell by: Show Answer

Q117) Passage of pollen tube through micropyle while reaching the embryo sac is: Show Answer

Q118) Tapetum occurs in: Show Answer

Q119) Which one is produced as a result of double fertilization? Show Answer

Q120) A component of female reproductive system is: Show Answer

Q121) Mango and Guava are propagated through: Show Answer

Q122) In a grafted plant, stock has 48 chromosomes while scion has 24 chromosomes. The chromosomes number for root cells and eggs are: Show Answer

Q123) Pollen grains are non-green due to: Show Answer

Q124) Pollen grain of tetraploid plant brings about fertilization in a diploid plant. The endosperm of seed will be: Show Answer

Q125) Multinucleate condition is present in: Show Answer

Q126) If meiosis occurs inside pollen grain and egg nuclei, it will be: Show Answer

Q127) Formation of embryo from vegetative cells derived from zygote is called: Show Answer

Q128) Formation of an organisation from a single, male gamete without fusion with egg is an example of: Show Answer

Q129) Adventive embryony in Citrus is due to: Show Answer

Q130) In grasses what happens in microspore mother cell for the formation of mature pollen grains: Show Answer

Q131) Which of the following statements is wrong: Show Answer

Q132) Double fertilization was given by: Show Answer

Q133) Hydroponics is: Show Answer

Q134) Number of nuclei present in common embryo sac are: Show Answer

Q135) In a flowering plant, archesporium gives rise to: Show Answer

Q136) Pollen grains are able to tolerate extremes of temperature and desiccation because their exine consists of: Show Answer

Q137) Plant part having two generations, one within the other is: Show Answer

Q138) Pollen tube usually enters the embryo sac: Show Answer

Q139) A plant root has 16 cells thus: Show Answer

Q140) Anthesis is a phenomenon which refers to: Show Answer

Q141) A diploid female plant is crossed with tetraploid male. The ploidy of endosperm will be: Show Answer

Q142) Which of the following represents the edible part of the fruit of Litchi? Show Answer

Q143) Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and mircopyle are close to each other? Show Answer

Q144) Why is vivipary an undesirable character for annual crop plants? Show Answer

Q145) In which one pair both the plants can be vegetatively propagated by leaf pieces? Show Answer

Q146) In a type of apomixis known as adventive embryony, embryos develop directly from the: Show Answer

Q147) Double fertilization involves: Show Answer

Q148) In some plants anthers and stigma grow and mature at same time. This phenomenon is called: Show Answer

Q149) Pollen sac in Cycas is called: Show Answer

Q150) In the angiosperm ovule central cell of the embryo sac, prior to the entry of pollen tube, contains: Show Answer

Q151) Xenia refer to: Show Answer

Q152) Pollination by snail and slug is known as: Show Answer

Q153) Male gemetes in angiosperms are formed by the division of: Show Answer

Q154) Eight nucleate embryo sacs are: Show Answer

Q155) Double fertilization (or triple fusion) leading to initiation of endosperm in angiosperms, requires: Show Answer

Q156) Many scientists consider viruses as living entities because these: Show Answer

Q157) The mode of asexual reproduction in bacteria are: Show Answer

Q158) Study of pollen grain is called: Show Answer

Q159) Filiform apparatus is a characterisitic feature of: Show Answer

Q160) What would be the number of chromosomes of aleurone cells of a plant with 42 chromosomes in its root tip cells? Show Answer

Q161) Which is the only method for compensation of loss of life due to death? Show Answer

Q162) Which of the following is not involved in development? Show Answer

Q163) In plants, special modes of propagation is/are: Show Answer

Q164) Any detached portion of plant can form a new plant called natural method of propagation. In which of following underground stem is used for propagation? Show Answer

Q165) Applying special technique plants can be artificially cultured. The method, gootee is involved in the propagation of: Show Answer

Q166) The mature anther dehisces by means of slits. The pollen grain is: Show Answer

Q167) Which of the following is first cell of male gametophyte? Show Answer

Q168) Inside the ovary there is one or more: Show Answer

Q169) Suspensor helps in pushing the embryo deep into endosperm. Suspensor formation in Sagittatia occurs at celled stage: Show Answer

Q170) Xenia is due to the effect of second male gamete fusing with secondary nucleus. Term 'Xenia was coined by: Show Answer

Q171) Microscopic structure in a flower that contains the polar nuclei is: Show Answer

Q172) Embryo sac is: Show Answer

Q173) Sporophytic budding occurs in orange, mango, opuntia and onion. It occura in: Show Answer

Q174) The epibasal cell divides repeatedly to produce a row of ... cell durying development in a dicot plant: Show Answer

Q175) Incompatibility is the inability of certain gametes, even from genetically similar plant species, to fuse with each other. If it is due to genotype of pollen termed: Show Answer

Q176) Double fertilization is: Show Answer

Q177) Which of the following statements is correct? Show Answer

Q178) How many divisions of functional megaspore undergo to form mature embryo sac? Show Answer

Q179) What you think is the correct sequence of the development of the embryo sac? Show Answer

Q180) Diversity of structures of the inflorescences, flower and floral parts - Show Answer

Q181) Which of the following is false ? Show Answer

Q182) The proximal part of filament of stamen is attached to - Show Answer

Q183) Microsoparangium is generally surrounded by 4 wall layers. Which of the following 3 wall layers perform the function of protection and help the dehiscence of anther to release the pollen ? Show Answer

Q184) Each cell of sporogenous tissue in anther is - Show Answer

Q185) Which of the following sequences is correct for microsporogenesis ? Show Answer

Q186) As the anthers mature and dehydrate, the ___ separate dissociate from each other and develop into Show Answer

Q187) Pollen grains of different species show characteristic difference in - Show Answer

Q188) Pollen grain ___ has prominent apertures called ___ where sporopollenin is ___. Show Answer

Q189) Which of the following points is incorrect about sporopollenin ? Show Answer

Q190) The inner wall of pollen grain - Show Answer

Q191) The first division in a pollen grain results in formation of - Show Answer

Q192) In angiosperms pollination occurs when pollen grains are in - Show Answer

Q193) Which of the following statements is false ?
(I) Pollen grains represents immatured male gametophyte
(II) In angiosperms partially developed male gametophytes are pollinated
(III) Generative cell is siponogenous while vegetative cell is spermatogenous
(IV) Formation and differentiation of pollen grains is called microsporogenesis
(V) Hay fever is a pollen allergy
(VI) Pollen grains of some plants produce severe allergy and respiratory or bronchial diseases
(VII) Pollen grains are poor in nutrients. Show Answer

Q194) Which of the following is correct about Parthenium (Carrot grass) ? Show Answer

Q195) It has become a fashion in recent years to use ___ tablets as food supplements. In western countries, a large number of ___ products in the form of tablets and syrups are available in the market. ___ consumption has been claimed to increase the performance of athletes and race horses - Show Answer

Q196) Pollen grains can be stored in liquid nitrogen at - Show Answer

Q197) The viability of pollen grains depends upon - Show Answer

Q198) Which of the following has the least pollen viability ? Show Answer

Q199) Micropyle is found in - Show Answer

Q200) Which of the following sequences of development of embryo sac / female gametophyte is correct ? Show Answer

Q201) An ovule has generally how many embryo sac ? Show Answer

Q202) For the formation of embryo sac, the megaspore mother cell undergoes - Show Answer

Q203) In typical embryo sac, the nuclei are arranged as - Show Answer

Q204) The female gametophyte / embryo sac of typical dicot (Polygonum) or monosporic embryo sac is - Show Answer

Q205) Embryo sac is monosporic when it develops from - Show Answer

Q206) Egg apparatus of an embryo sac consists of - Show Answer

Q207) The largest cell in an embryo sac is - Show Answer

Q208) During the formation of embryo sac from megaspore miotic divisions occurs. These divisions are - Show Answer

Q209) Which of the following statements is false about filiform apparatus ? Show Answer

Q210) The ploidy levels of the cells of the nucellus, MMC, the functional megaspore and female gametophyte - Show Answer

Q211) The term pollination signifies - Show Answer

Q212) Autogamy is - Show Answer

Q213) Contrivance for self-pollination / autogamy is - Show Answer

Q214) Cleistogamous flowers produce assured seed-set even in the absence of pollinator - why ? Show Answer

Q215) Which of the following plants produce(s) chasmogamous and cleistogamous flowers ? Show Answer

Q216) Chasmogamy is pollination in - Show Answer

Q217) Which of the following devices is not used by plants to prevent autogamy - Show Answer

Q218) Subterranean cleistogamous and geophilous flowers occur in - Show Answer

Q219) Pollination occuring in closed flowers is - Show Answer

Q220) Cleistogamous flowers are - Show Answer

Q221) The process whereby a perfect flower is pollinated by its pollen is called - Show Answer

Q222) The term used when anthers and stigma of an intersexual or perfect flower ripen before the opening of buds as in wheat and pea is - Show Answer

Q223) Transfer of pollen grains from anther to the stigma of another flower of same plant is - Show Answer

Q224) Geitonogamy is - Show Answer

Q225) Which of the following is false about xenogamy ? Show Answer

Q226) In nature, allogamy is met within ___ surely - Show Answer

Q227) Go through the following statements -
(I) Flowers are bisexual and homogamous maturing anther and sigma of a flower at the same time
(II) Mechanical devices bringing anthers and stigma close together in a bisexual chasmogamous flower
(III) Cleistogamy (bisexual flowers remain closed)
(IV) Anther and sigma of an intersexual flower mature in bud condition.
The above contrivances favour - Show Answer

Q228) Go through the following points.
(I) Dicliny (Unisexuality of flower)
(II) Dichogamy (Protoandry or protogyny)
(III) Self sterility / self incompatibility
(IV) Heterosyly
(V) Herkogamy (Barrier between anther and stigma of a bisexual homogamous flower)
The above contrivances prevent - Show Answer

Q229) Which of the following statements is correct ? Show Answer

Q230) Go through the following statements -
I. Flowers are smail. They are often packed in inflorescence
II. Flowers are colourless, nectarless and odourless
III. Well exposed stamens
IV. Pollen grains - produced in large number, light, non-sticky
V. Flowers often have a single ovule in each ovary
VI. Stigma - large, often feathery.
The above contrivances favour - Show Answer

Q231) Which of the following is false? Show Answer

Q232) Long silky hair coming out of the cob maize are - Show Answer

Q233) Which of the following statement is false ?
I. Vallisneria and Hydrilla are fresh water plants while sea-grasses (e.g. Zostera) are marine plant
II. Vallisneria is epihydrophilous while zostera is hypohydrophilous.
III. Pollination in water lily/Lotus (Nymphea) and Eichhornia (water hyacinth) takes place by insects
IV. In majority of aquatic plants flowers emerge above the level of water and are pollinated by insects or wind
V. In most of the water pollinated species, pollen grains are protected from wetting due to absence of mucilaginous covering
VI. In hydrophilous plants pollen grains are spherical. Show Answer

Q234) In Tapegrass (Vallisneria) - Show Answer

Q235) The most common type of pollination is - Show Answer

Q236) Find out the correct option - Show Answer

Q237) Moth (Pronuba / Tegaticula) passes its larval stage in plant pollinated by it. The plant is Show Answer

Q238) An obligate association between flower and pollinating agent is found in - Show Answer

Q239) Which of the following plants provide floral rewards to their pollinating agents - Show Answer

Q240) Which of the following are usual floral rewards to pollinating animals ? Show Answer

Q241) I. Flowers are usually large, colorful, fragrant
II. Pollen grains are produced in large number
III. Pollen grains are light in weight and non-sticky
IV. Sticky pollen grains
V. Stigma inserted and sticky
VI. Stigma is feathery
VII. Edible pollen grains and nectar.
Which of the above characters favour entomophily? Show Answer

Q242) Which of the following is the tallest flower? Show Answer

Q243) In castor and maize autogamy is prevented but geitonogamy occurs because - Show Answer

Q244) All of the following include outbreeding devices except - Show Answer

Q245) Repeated self pollination over the generation produces - Show Answer

Q246) Unisexuality of flower prevents - Show Answer

Q247) What is the genetic importance of outcrossing ? Show Answer

Q248) Which of the following would not have an effect on flowering of a particular plant species ? Show Answer

Q249) Majority of flowering plants - Show Answer

Q250) Self-incompatibility -
(I) is a device to prevent inbreeding
(II) Provides a biochemical block to self-fertilization
(III) Ensures cross-fertilization
(IV) is governed by pollen-pistil interaction
(V) is governed by series of multiple alleles
(VI) Prevents self pollen (From the same flower or other flower of the same plant) from fertilizing the ovules by inhibiting pollen germination or pollen tube growth in the pistil. Show Answer

Q251) In which part of a flower do both meiosis and fertilization occur ? Show Answer

Q252) Self-incompatibility - Show Answer

Q253) Which of the following options is correct ? Show Answer

Q254) The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil.
This dialogue is mediated by chemical components of the pollen interacting with those of the pistil. Which of the following chemicals mainly takes part in the interaction - Show Answer

Q255) Which of the following is correct ? Show Answer

Q256) Fertilization is depicted by the condition - Show Answer

Q257) Pollen tube enters the embryo sac usually - Show Answer

Q258) In double fertilization total number of male nuclei and total number of female nuclei involved are - Show Answer

Q259) One meiosis produces how many male gametes - Show Answer

Q260) Following components are haploid, diploid or triploid
A = Oosphere
B = Microspore
C = Synergids
D = Antipodal cell
E = Oospore
F = Nucellus
G = Placenta
H = Chalaza
I = Endosperm
J = Tapetum
Which of following groups show the correct sequence of the ascending order of ploidy in ovule /seed ? Show Answer

Q261) The number of chromosomes in radicle is 16.What will be the number of chromosomes in tube nucleus, antipodal cells,definitive nucleus and endosperm respectively ? Show Answer

Q262) Female plant is diploid and male plant is tetraploid. Find out the correct match. Show Answer

Q263) A homogamous tall pistillate plant (TT) is crossed with homogamous dwarf st. What is the genotype of endosperm ? Show Answer

Q264) The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes - Show Answer

Q265) The male gamete is x and egg is 3x. The ploidy level in embryo and endosperm will be - Show Answer

Q266) For artificial hybridisation experiment in bisexual flower, which of the sequences is correct ? Show Answer

Q267) Which of the following is false about emasculation ? Show Answer

Q268) Emasculation is not required when flowers are - Show Answer

Q269) The purpose of bagging an emasculated flower in artificial hybridisation programme is Show Answer

Q270) After triple fusion central cell changes into - Show Answer

Q271) The study of formation, growth and development of new individual from an egg is called - Show Answer

Q272) Father of Indian embryology is - Show Answer

Q273) Endosperm in angiosperm is formed from secondary nucleus- Show Answer

Q274) Which of the following is false ?
(I) Endosperm formation starts prior to first division of zygote
(II) Angiospermic endosperm is mostly 3N while gymnospermic one is N
(III) The most common type of endosperm is nuclear.
(IV) Coconut has both liquid nuclear (multinucleate) and cellular endosperm
(V) Milky water of green tender coconut is liquid female gametophyte. Show Answer

Q275) In a fertilized ovule, n, 2n and 3n conditions occur respectively in - Show Answer

Q276) In coconut liquid nuclear endosperm is surrounded by white kernel which is - Show Answer

Q277) Nuclear or cellular nature of endosperm can be known at a - Show Answer

Q278) Endosperm is completely consumed by developing embryo before seed maturation or exalbuminous / non-endospermic seeds are found in - Show Answer

Q279) Albuminous / endospermic seeds are - Show Answer

Q280) Which of the sequences is correct for embryogenesis in dicots? Show Answer

Q281) Embryos of monocotyledons possess only one __(A)__. In the grass family the cotyledon is called __(B)__ that is situated towards one side (lateral) of the embroynal axis. At its lower end, the embryonal axis has the radical and root cap enclosed in an undifferentiated sheath called __(C)__.
The portion of the embryonal axis above the level of attachment of scutellum is the __(D)__ which has a shoot and apex enclosed in a foilar structure called __(E)__. Show Answer

Q282) (I) No endosperm
(II) Endosperm present
(III) Cotyledons - thin
(IV) Cotyledons - thick
(V) Food is stored in cotyledons
(VI) Food is stored in endosperms
Sort out correct points (from I to VI) for (A) - Albuminous and (B) - Exalbuminous seeds. Show Answer

Q283) In some seeds like black pepper and beet, remnants of nucellus are present. This residual, persistent nucellus is called - Show Answer

Q284) Aleurone layer takes part in - Show Answer

Q285) During germination, micropyle of seed takes part in - Show Answer

Q286) Which are the external conditions required for seed germination - Show Answer

Q287) Seed dormancy allows the plants to - Show Answer

Q288) An example of a seed with endosperm, perisperm and caruncle is - Show Answer

Q289) Study of pollen grains is - Show Answer

Q290) Secondary nucleus is formed by - Show Answer

Q291) Which plant part has two generations, one within the other - Show Answer

Q292) Which of the following is false ? Show Answer

Q293) Which of the following is not correct ? Show Answer

Q294) Which of the following will lost its economic value if fruits are produced through parthenocarphy. Show Answer

Q295) In most plants; the fruit develops from the ovary, other parts degenerate and fall off such fruits are called - Show Answer

Q296) False fruits (thalamus also contributes to fruit formation) are found in - Show Answer

Q297) Which of the following statements is correct ? Show Answer

Q298) Which of the following is crucial for storage of seeds to be used as food throughout the year and to raise crops in the next season ? Show Answer

Q299) The cause of dormancy for sometime in fertilized ovule is - Show Answer

Q300) The role of tapetum in the formation of pollen grain wall includes all except - Show Answer

Q301) Seeds are adaptively important because - Show Answer

Q302) The world's oldest viable seed, excavated from Arotic Tundra is of - Show Answer

Q303) Which of the following statements is false ? Show Answer

Q304) Which of the following statements is false ? Show Answer

Q305) Hybrid seeds have to be produced every year because - Show Answer

Q306) Active research is going on in many laborateries around the world to understand the genetics of apomixis.
What is the purpose of such active research ? Show Answer

Q307) In citrus, a seed has 10 embryos. Out of 10 embryos - Show Answer

Q308) Wind pollination is common in Show Answer

Q309) What would be number of chromosomes of aleurone cells of plant with 42 chrosome in its root tip cells ? Show Answer

Q310) What is common between vegetative reproduction and Apomixis ? Show Answer

Q311) What is the function of germ pore ? Show Answer

Q312) Which one of the following statements is wrong ? Show Answer

Q313) Plants with ovaries having only one or a few ovules, are generally pollinated by : Show Answer

Q314) Both, autogamy and geitonogamy are prevented in - Show Answer

Q315) An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is : Show Answer

Q316) The gynoecium consists of many free pistils in flowers of Show Answer

Q317) Even in absence of pollinating agents seed setting is assured in Show Answer

Q318) Megasporangium is equivalent to : Show Answer

Q319) Which one of the following statements is correct ? Show Answer

Q320) Product of sexual reproduction generally generates : Show Answer

Q321) Advantage of cleistogamy is Show Answer

Q322) Perisperm differs from endosperm in Show Answer

Q323) The innermost wall layer of microsporangium nourishing the developing pollen grains is known as Show Answer

Q324) Number of male gamete formed by 16 microspore mother cell is Show Answer

Q325) Pollen tablets are available in the market for : Show Answer

Q326) An immature male gametophyte differs from a mature male gametophyte in that it Show Answer

Q327) Which of the following finds application in hybrid seed industry ? Show Answer

Q328) How many and which type of male gametes are produced by the male gametophyte of angiosperm ? Show Answer

Q329) 'Seeds are the basis of our agriculture and offer several advantages to angiosperms'. Find the odd statement among the following ? Show Answer

Q330) Pollen tube, after reaching the ovary, does not show following event. Show Answer

Q331) Find odd one with the respect to the stage which occurs after most vital event of sexual life cycle of angiosperms. Show Answer

Q332) Pollen tube releases the two male gamete into the Show Answer

Q333) In a majority of flowering plants : Show Answer

Q334) Find one word for the following statements and choose the correct option.
(I) Residual, persistent nucellus in seed - A
(II) Microspores arranged in a cluster of four cells - B
(III) Special cellular thickening at the micropylar end of embryo sac - C
(IV) Development of seeds without fertilisation - D Show Answer

Q335) Consider the following statements with respect to flowering plants.
A : The pollen grains represent the male gametes.
B : The functional megaspore develops into the embryo sac represent the female gamete
C : Transfer of pollen grains from anther to the stigma of different plant is known as Xenogamy
D : Transfer of pollen grains from anther to the stigma of another flower of the same plant is known as geitonogamy.
Of the above statements
Show Answer

Q336) Which of the following is false in angiosperms ? Show Answer

Q337) Consider the following statements and choose the correct option.
A : The ovule is attached to the placenta by means of a stalk called filament.
B : The ovule fuses with the stalk in the region called hilum.
C : The two protective envelopes of ovule are called integuments.
D : The small opening in the tip of ovule is called germ pore.
Of the above statements Show Answer

Q338) If there are 1280 microspores in a tetralocular anther, how many microspore mother cells will be there in its each pollen chamber ? Show Answer

Q339) Large stout, nocturnal flowers producing copious nectar and emitting fermenting fruity odour, are the adaptations for Show Answer

Q340) What is not true about emasculation of a flower while performing an artificial cross ? Show Answer

Q341) Papaya is a dioecious plant. This condition prevents Show Answer

Q342) Egg in female gametophyte is accompanied by Show Answer

Q343) The hilum is a scar on the Show Answer

Q344) Which one of the following statements is not true ? Show Answer

Q345) Which one of the following may require pollinators, but is genetically similar to autogamy ? Show Answer

Q346) Which of the following are the important floral rewards to the animal pollinators ? Show Answer

Q347) The wheat grain has an embryo with one large, shield shaped cotyledon known as Show Answer

Q348) In angiosperms, microsporogenesis and megasporogenesis Show Answer

Q349) Male gametophyte in angiosperms produces Show Answer

Q350) Coconut water from a tender coconut is Show Answer

Q351) In the given list how many plants have unisexual flowers on the same plant.
Cucurbits, Papaya, Castor, Coconut, Date palm, Maize Show Answer

Q352) Wind pollination is quite common in - Show Answer

Q353) In which of following for artificial hybridisation there is no need for emasculat - Show Answer

Q354) In the given list of plants how many have albuminous seeds ?
Pea, Wheat, Groundnut, Maize, Barley, Castor Show Answer

Q355) The coconut water from tender coconut represents - Show Answer

Q356) Proximal end of the filament of stamen is attached to the Show Answer

Q357) Which of the following statements is not correct ? Show Answer

Q358) Seed formation without fertilizaton in flowering plants involves the process of - Show Answer

Q359) Cotyledon of maize grain is called - Show Answer

Q360) Which one of the following statements is not true ? Show Answer

Q361) In majority of angiosperms : Show Answer

Q362) Pollination in water hyacinth and water lily is brought about by the agency of : Show Answer

Q363) The ovule of an angiosperm is technically equivalent to : Show Answer

Q364) In embryo sac double fertilization means :
(I) Formation of double zygote.
(II) Fusion between egg and male gamete.
(III) Formation of perisperm
(IV) Fusion between secondary nucleus and male gamete. Show Answer

Q365) Parthenocarpic fruit Show Answer

Q366) Seed is Show Answer

Q367) Find out the correct statement Show Answer

Q368) Vegetative fertilization leading to the formation of endosperm refers to Show Answer

Q369) Which of the following is the result of double fertilization? Show Answer

Q370) Perisprem is found in Show Answer

Q371) The ‘eyes’ of the potato tuber are Show Answer

Q372) True fruit is directly derived from Show Answer

Q373) Intine is made up of Show Answer

Q374) The arrangement of the nuclei in a normal embryo sac in the dicot plants, is Show Answer

Q375) Pericarp is Show Answer

Q376) The function innermost layer of pollen sac, tapetum is Show Answer

Q377) The movement of pollen tube is called Show Answer

Q378) Which of the following statements is wrong?
Show Answer

Q379) Triple fusion in angiosperm is the fusion of second sperm with Show Answer

Q380) ‘Mircrospores arranged in a cluster of four cells called megaspore tetrad’.
The above statement is Show Answer

Q381) Insect pollinated flowers are Show Answer

Q382) The fusion of male and female pronuclei of the gametes is called Show Answer

Q383) A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of Show Answer

Q384) When pollen is transferred from anther of a flower to stigma of the another of the another flower of the same plant, it is referred to as Show Answer

Q385) False fruit is a fruit in which Show Answer

Q386) Synergid’s filiform apparatus Show Answer

Q387) Double fertilization occurs among Show Answer

Q388) Scutellum is Show Answer

Q389) Sporopollenin is chemically Show Answer

Q390) Which one of the following is not a correct explanation of cross-pollination? Show Answer

Q391) How many cells are found in female gametophyte? Show Answer

Q392) Identify the wrong statements regarding post-fertilization development. Show Answer

Q393) Two nuclei with one cell are found in Show Answer

Q394) 8-nucleated embryo sac are Show Answer

Q395) Microspore develops into ova. This sentence is Show Answer

Q396) During the formation of embryo sac, the functional megaspore undergoes Show Answer

Q397) What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids? Show Answer

Q398) In a type of apomixes known as adventive embryony, embryos develop directly from the Show Answer

Q399) Male gametes wheather 2 celled or 3-celled are identical in genetic make up because Show Answer

Q400) Apomixis arises due to Show Answer

Q401) Endosperm is consumed by developing embryo in the seed of Show Answer

Q402) Haploid plants derived from microspore culture are preferred over diploids for mutation studies, because in haploids Show Answer

Q403) The number of female nuclei involved in double fertilization is Show Answer

Q404) A micropyle is a Show Answer

Q405) PEC (Primary Endosperm Cell) is formed Show Answer

Q406) In ovule protective covering (integuments) are generally _______ in number Show Answer

Q407) These processes are necessary for the complete development of male gametophyte from pollen mother cell. Show Answer

Q408) Majority of plants are Show Answer

Q409) Individual part or segment of calyx is called Show Answer

Q410) Pollination by insect is Show Answer

Q411) Sexual reproduction leads to Show Answer

Q412) A bisexual flower which never open, is known as Show Answer

Q413) Fruit and seed develops Show Answer

Q414) Characteristics of wind pollinated pollens is, they are Show Answer

Q415) In chasmogamy pollination takes place in Show Answer

Q416) Which is most crucial for seed storage? Show Answer

Q417) Entry of pollen tube with two male gametes and tube nucleus through micropyle, is Show Answer

Q418) Syngamy is the process in which Show Answer

Q419) Pollen grains of different plants, differ in Show Answer

Q420) Which one of the following is a reference to xenogamy ? Show Answer

Q421) Selaginella and Salvinia considered to represent a significant step towards evolution of seed habit because Show Answer

Q422) Zygote is always Show Answer

Q423) Occurrence of more than four spores from a spore mother cell is called Show Answer

Q424) Type of pollination in commelina is Show Answer

Q425) Pollens have two prominent walls which are … A … and … B …. Here A and B refers to Show Answer

Q426) If there are four cells in a anther, what will be the number of pollen grains? Show Answer

Q427) Xenogamy or cross-pollination is performed by
I. Abiotic agencies
II.Biotic agencies
III.Insects only
Select the correct option for the given question Show Answer

Q428) In wind pollination the pollens are feathery, whether it is Show Answer

Q429) Identify the characters with reference to the plant in which eight nucleated embryo sac was first studied by strasburger.
I.Micropyle, chalaza and funiculus are arranged in the same vertical line In the ovule.
II. presence of both unisexual and bisexual flowers in the same plant.
III.Filiform apparatus helps in conduction of food materials from Endosperm to egg apparatus.
IV. Long funiculus coils like a watch spring around the ovule.
Show Answer

Q430) Devices for self-pollination are Show Answer

Q431) Chalazal pole is present Show Answer

Q432) Vegetative fertilization is also called Show Answer

Q433) Vegetative/Asexual reproduction and apomixis are common in Show Answer

Q434) Xenia refers to Show Answer

Q435) Long silky hairs on cob of maize are Show Answer

Q436) The endosperm in angiosperm develops from Show Answer

Q437) What is pollen grain? Show Answer

Q438) Type of cell division takes place in apomixes is Show Answer

Q439) Out of the following choose the post-fertilisation events Show Answer

Q440) Apomixis is like Show Answer

Q441) Parthenium or carrot grass is imported with Show Answer

Q442) Pollination by snail and slug is called Show Answer

Q443) Some plant have a habit of harbouring ants to save the plants from damage by other animals which is known as Show Answer

Q444) The wall of pollen tube is made of Show Answer

Q445) One advantage of cleistogamy is Show Answer

Q446) Flower is a Show Answer

Q447) Cleistogamous flowers are trictly autogamous because they remain Show Answer

Q448) Wind pollinated flowers often have Show Answer

Q449) Continued self-pollination results in Show Answer

Q450) Wind pollinated flowers are Show Answer

Q451) ‘Cells at the chalazal end are called synergid cells’. The above statement is Show Answer

Q452) Orthotropous ovule belongs to Show Answer

Q453) Center of each microsporangium is occupied by Show Answer

Q454) Which of the following plant products is the hardest? Show Answer

Q455) Functional megaspore develops into …A… also called …B… A and B in the above sentence is Show Answer

Q456) Syngamy and triple fusion is called …A… . The central cell becomes …B… develops into …C… and zygote develops into …D…
A, B, C, D in the above statement are Show Answer

Q457) Dicot embryo consists of Show Answer

Q458) First three layers of microsporangium which does the function of protection are Show Answer

Q459) Nucellar polyembryony is reported in species of Show Answer

Q460) Nucellus forms which of the following parts of fruit? Show Answer

Q461) Mesogamy is Show Answer

Q462) Identify the correct statement. Show Answer

Q463) Which of the following perform microsporogenesis? Show Answer

Q464) Tapetum is found in Show Answer

Q465) Double fertilization was discovered by Show Answer

Q466) Microsporangium produces Show Answer

Q467) Grafting is successful in dicots but not in monocots because the dicots have Show Answer

Q468) Megaspore mother cell is found near the region of Show Answer

Q469) Ovule integument gets transformed into Show Answer

Q470) Which one of the following pairs of plants structures has haploid number of chromosomes? Show Answer

Q471) Self-incompatibility is a device for
I. Ensuring cross-pollination
II. Preventing self-pollination
III. Ensuring self-fertilisation
IV. Genetic control for self-fertilisation
Choose the correct statements from those given above Show Answer

Q472) How many number of nuclei are involved in fertilization? Show Answer

Q473) Ovules contain many embryo in Show Answer

Q474) Maximum viability of rice and wheat is Show Answer

Q475) For a gene if AA = male plant, BB = female plant. Find out the genotype of endosperm and embryo Show Answer

Q476) Micropyle helps in Show Answer

Q477) The ovary after fertilization is converted into Show Answer

Q478) Which of these is not essential for allogamy? Show Answer

Q479) ‘In coconut the cellular endosperm surrounds the nuclear endosperm’.
The above statement is Show Answer

Q480) Hermaphrodite flower have Show Answer

Q481) Unisexuality of flowers prevents Show Answer

Q482) Stalk with which ovules attached to the placenta is called Show Answer

Q483) Self-pollination means Show Answer

Q484) Meiotic cell division takes place during Show Answer

Q485) The outermost layer of maize endosperm is known as Show Answer

Q486) Why sometimes, even diploid offspring is produced through parthenogenesis? Show Answer

Q487) The process in which haploid embryo is formed from haploid egg without fertilization is called Show Answer

Q488) Which of the following floral parts forms pericarp after fertilization? Show Answer

Q489) Tapetal cells are characterized by Show Answer

Q490) Pollen grains can cause Show Answer

Q491) Non-albuminous seed Show Answer

Q492) Development of an embryo without fertilization Is called as Show Answer

Q493) Non-endospermic seeds are seen in Show Answer

Q494) The cylindrical portion below the cotyledons is …A… that terminates to …B… and tip called …C… A, B and C here refers to Show Answer

Q495) The type of pollination adaptation found in calotropis is Show Answer

Q496) Fertilization of egg takes place inside Show Answer

Q497) If the number of chromosomes in egg cell is 8, then what is the number of chromosomes on endosperm? Show Answer

Q498) Find out right statement (s)
I. Most common endosperm is of nuclear type
II. Coconut water is male gametophyte
III. Coconut has both nucellar and cellular type of endosperm Show Answer

Q499) Number of seeds is equals to the Show Answer

Q500) Nuclear polyembryony is reported in Show Answer

Q501) The process of transfer of pollen grains from anther to stigmatic surface with the help of water is called Show Answer

Q502) Anemophily is a type of pollination found in Show Answer

Q503) I. Antipodal cell
II. Egg cell
III. Synergid cell
IV. Polar nuclei
V. Male gamete
VI. Nuclear cell
IV. Chalazal cell
Out of the seven names given above, find out haploid cells
Show Answer

Q504) There are 10 flowers in one individual plant of crotalaria. In each microsporangium of every stamen of all the flowers, there are 30 microspore mother cells. How many pollen grains are formed from that plant? Show Answer

Q505) Apomictic embryos in Citrus arise from Show Answer

Q506) Chances of pollination in air and water are increased by increasing number of pollens. This statement is Show Answer

Q507) Micropyle is formed by Show Answer

Q508) In a flowering plants, megaspore develops into an embryo sac, which contains Show Answer

Q509) What does the filiform apparatus do at the entrance into ovule? Show Answer

Q510) Function of aleurone layer is to Show Answer

Q511) Pollination by bats is called Show Answer

Q512) Which one of the following is not a device to promote cross-pollination? Show Answer

Q513) Which cell is bigger and have abundant food reserve material during microsporogenesis? Show Answer

Q514) In artificial hybridization the steps involved are
I. Bagging
II. Emasculation
III. Rebagging
Their right arrangement is Show Answer

Q515) In some plants, anthers and stigmas grow and mature at same time. This phenomenon is called Show Answer

Q516) Double fertilization is fusion of Show Answer

Q517) How many nuclei are found in female gametophyte? Show Answer

Q518) An ovule is a Show Answer

Q519) Nuclear endosperm has Show Answer

Q520) A typical angiosperm embryo sac at maturity, is Show Answer

Q521) Device to discourage self-pollination or increase cross-pollination is Show Answer

Q522) Occurrence of more than one embryo is called Show Answer

Q523) Grass family (Poaceae) contains Show Answer

Q524) What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation to male gametes from pollen grains? Show Answer

Q525) Pollen grains are shed at Show Answer

Q526) Which of these cells is the largest cell of the ovule? Show Answer

Q527) In orthotropous ovule, the micropyle and chalaza are Show Answer

Q528) Pick out the wrong statement. Show Answer

Q529) The onagrad type embroyo, development is found in Show Answer

Q530) Male gametes in angiosperms are formed by the division of Show Answer

Q531) In the fully organized Polygonum type of embryo sac, what is the ratio of haploid, diploid and triploid nuclei? Show Answer

Q532) Megasporogenesis is Show Answer

Q533) Fibrous thickenings of hygroscopic nature are found in which part of the anther wall? Show Answer

Q534) Which one of following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other Show Answer

Q535) In angiosperm functional megaspore develops into Show Answer

Q536) Ornithophily refers to the pollination by which of the following? Show Answer

Q537) Raphe is Show Answer

Q538) The pollens are liberated in cassytha by Show Answer

Q539) Pollen kit material is secreted by Show Answer

Q540) Wind pollinated flower have long well exposed stigma. This statement is Show Answer

Q541) Microsporangia develops in to Show Answer

Q542) Pollen grains have ability to tolerate extreme temperatures because of the presence of Show Answer

Q543) An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female of his species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called Show Answer

Q544) Petals together form Show Answer

Q545) Cleistogamous flowers Show Answer

Q546) Autogamy stands for Show Answer

Q547) Pollens outer layer is called …A… . This is made up of …B… . This is absent on the …C… . Fill in the blanks A,B and C Show Answer

Q548) “In Western countries a large number of …… Product in the form of tablets and ……. are available in market. Pollen consumption claimed to increase the …… of athelete”. The words to fill blanks in sequential order are Show Answer

Q549) Tapetum is Show Answer

Q550) Formation of diploid embryo sac from diploid vegetative structure, eg, nucellus or integument, etc, without meiosis is called Show Answer

Q551) The terminal structure of stamen is called Show Answer

Q552) Generally pollen tube enters through Show Answer

Q553) Water pollinated plant is Show Answer

Q554) Endospermic seeds are seen in Show Answer

Q555) Parthenogenesis is a type of Show Answer

Q556) Banana fruits are seedless, because Show Answer

Q557) Which of the following is not true for double fertilization? Show Answer

Q558) Mature male gametophyte is derived from a ‘pollen mother cell’ by Show Answer

Q559) Embryo sac is also known as Show Answer

Q560) Albuminous seed Show Answer

Q561) How many nuclei take part in double fertilization of flowering plants? Show Answer

Q562) A typical dicotyledonous embryo consist of an …A… axis and …B… cotyledons.
The portion of embryonal axis above the level of cotyledons is …C… which terminates with the …D… or stem tip.
A, B, C, D in the above statement are Show Answer

Q563) Transfer of pollen grains from one flower to another flower of same plant is Show Answer

Q564) Which one of the following statements is not true? Show Answer

Q565) In embryo sac the number of → synergid → egg cell → central cell → antipodal cell follows the order Show Answer

Q566) Choose the mis –matched option. Show Answer

Q567) Which one of the following would not lead to formation of clones? Show Answer

Q568) Apomixis is seen in Show Answer

Q569) Ovary develops into Show Answer

Q570) Pollination is Show Answer

Q571) Approximate diameter of pollen grain is Show Answer

Q572) In porogamy, pollen tube enters the ovule through the Show Answer

Q573) A seed matures if water content is reduced to …’A’ ….. . If the general metabolism …B…. . The embryo enter a state called … C … .
Choose correct option for A,B and C Show Answer

Q574) What will be the gametic chromosome number of a cell, if somatic cell have 40 chromosomes? Show Answer

Q575) Stem cutting are commonly used for the propagation of Show Answer

Q576) The fertilization in which male gametes are carried through pollen tube, is known as Show Answer

Q577) If endosperm has 36 number of chromosomes then find out the chromosome number of male and female gamete Show Answer

Q578) For the formation of tetrasporic embryo sac, how many megaspore mother cells are required? Show Answer

Q579) The phenomenon in which, anther and stigma grow and mature at same time is called Show Answer

Q580) Emasculation is not required in Show Answer

Q581) Testa of a seed is produced from Show Answer

Q582) Thalamus contributes in the fruit formation in Show Answer

Q583) Most oldest viable seed is of Show Answer

Q584) Which one of the following was observed for the first time by Trenb? Show Answer

Q585) Self incompatibility is Show Answer

Q586) In embryo sac, n, 2n, 3n, conditions are found respectively in Show Answer

Q587) Which one of the following is resistant to enzyme action? Show Answer

Q588) Pollens are considered as well preserved fossils due to the presence of Show Answer

Q589) Double fertilization involves Show Answer

Q590) Seed germination requires
I. Ligh
II. Temp suitable
III. Moisture
IV. Oxygen
Select correct option Show Answer

Q591) In which one pair, both the plants can be vegetatively propagated by leaf pieces? Show Answer

Q592) Larger nucleus in a pollen grain is Show Answer

Q593) Tallest flower is Amorphophallus. It is Show Answer

Q594) Anthesis is Show Answer

Q595) Single megasporic development is called Show Answer

Q596) Consider the following statements and choose the correct option.
I. The genetic constitution of a plant is unaffected in vegetative propagation.
II. Rhizome in ginger serves as an organ of vegetative reproduction.
III. Totipotency of cells enables us to micropropagate plants. Show Answer

Q597) Micropyle exists in Show Answer

Q598) Which one of the following is surrounded by a callose wall? Show Answer

Q599) In Amorphophyllus and Yucca, the moth lay egg into the Show Answer

Q600) Which of the following is incorrect in angiosperm? Show Answer

Q601) Aleurone layer is found in Show Answer

Q602) Advantage of seed is/are Show Answer

Q603) Epicotyle is the upper part of embryonal axis in Show Answer

Q604) Ruminate endosperm is found in the seeds of family Show Answer

Q605) The process of embryo formation without fertilization, is known as Show Answer

Q606) Micropyle is useful for the entry of Show Answer

Q607) Cleistogamous flower is found in Show Answer

Q608) Find out the odd one. Show Answer

Q609) The outermost and inner most wall layers of microporangium in anther are (respectively) Show Answer

Q610) Microsporogenesis is Show Answer

Q611) Function of micropyle is Show Answer

Q612) Bright colouration of flowers is an adaptation for Show Answer

Q613) If root of flowering plant has 24 chromosomes then its gamete has how many chromosomes? Show Answer

Q614) If stock contains 58 chromosomes and scion contains 30 chromosomes,Then how many chromosomes are present in root and egg cell of resultant plant respectively? Show Answer

Q615) In some organisms, karyokinesis is not followed by cytokinesis as a result of which, multinucleate condition arises leading to the formation of syncytium. The perfect example for this is Show Answer

Q616) The process of formation of microspore from the microspore mother cell is called megasporogenesis. The above statement is Show Answer

Q617) From which cells of embryo, plumule is produced? Show Answer

Q618) Triploid tissue in angiosperms, is Show Answer

Q619) … A… egg cell, …B… zygote, …C… endosperm. Find out the correct ploidy nature of A, B and C Show Answer

Q620) The ovule attached to the placenta of ovary wall by Show Answer

Q621) Apomixis is the development of Show Answer

Q622) The plant part which consists of two generations one within the other, is Show Answer

Q623) Find out right statement (s)
I. Endosperm formation is the prior event than zyote formation.
II. Angiospermic endosperm is 3n.
III. Gymnospermic endosperm is n.
Show Answer

Q624) Transfer of pollen grains from the anther to the stigma of another flower of the same plants is called Show Answer

Q625) After fertilization, the outer integument forms Show Answer

Q626) Water pollination Show Answer

Q627) Plants of which one of the following groups of genera are pollinated by the same agency? Show Answer

Q628) Pollens are be stored at which temperature Show Answer

Q629) The total number of nuclei involved in double fertilization in angiosperms are Show Answer

Q630) In a flowering plant, the pollen tube first arrives in Show Answer

Q631) Filiform apparatus are Show Answer

Q632) What would be the number of chromosomes of the aleurone cell of a plant with 42 chromosomes in its root tip cells? Show Answer

Q633) Filiform apparatus is a characteristic feature of Show Answer

Q634) An angiospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be Show Answer

Q635) Embryo developed from the somatic cells are called Show Answer

Q636) Wind pollinated and water pollinated plants Show Answer

Q637) The endosperm in angiosperms develops from Show Answer

Q638) ‘Cells in the micropylar region are called antipodal cell’ Show Answer

Q639) Sporopollenin is made up of organic material’. The above statement is Show Answer

Q640) Viability of date palm seed is Show Answer

Q641) Coleorhiza is Show Answer

Q642) Sugarcane is cultivated through Show Answer

Q643) ‘Sporopollenin is absent at the germpore’. The above statement is Show Answer

Q644) Why seed dormancy takes place? Show Answer

Q645) One of the most resistant known biological material is Show Answer

Q646) It is process of embryo sac formation from cell of nucellus, without undergoing meiosis. Show Answer

Q647) Study the following statements and choose the correct option.
I – Tapetum nourishes the developing pollen grains.
II- Hilum represents the junction between ovule and funicle
III– In aquatic plants such as water hyacinth and water lily, pollination is by water. IV- The primary endosperm nucleus is tripoid. Show Answer

Q648) Mass of cells enclosed by integuments is called Show Answer

Q649) Which of the following statements about sporopollenin is false? Show Answer

Q650) Genotype of endosperm is ZZA, find out the genotype of male and female plant respectively Show Answer

Q651) An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is Show Answer

Q652) Polar nuclei are located in Show Answer

Q653) A typical angiosperm anther is Show Answer

Q654) Wind pollination is common in grassess. This statement is Show Answer

Q655) Study the following and find correct option
I. Tapetum nurishes the developing pollen grain
II. Hilum represents the junction between ovule and funicle
III. In aquatic plants such as water hyacinth and lilly pollination is by water
IV. The primary endosperm nucleus is triploid Show Answer

Q656) Apogamy is Show Answer

Q657) Number of microsporangia in an angiospermic anther is Show Answer

Q658) Which of the following statement is/are true
I. Endothecium lies behind epidermis
II. Fusion of egg with male gamete is called apogamy.
III. Synergids are haploid
IV. The point at which funicle touches the ovule is raphe. Show Answer

Q659) Egg apparatus of angiosperms consist of Show Answer

Q660) Pollen tube enters through Show Answer

Q661) Aquatic plant like water-hyacinth and water lily are pollinated by Show Answer

Q662) Function of tapetum is to provide Show Answer

Q663) Root has 42 chromosome then find out the chromosomal number of synergid Show Answer

Q664) In nature, cleistogamous flowers are Show Answer

Q665) Among the sets of terms given below, identify those that are associated with gynoecium Show Answer

Q666) The nutritive layer of microsporangia of cypsella Show Answer

Q667) A longitudinal groove runs lengthwise separating the theca. This groove is called line of dehiscence. The above sentence is Show Answer

Q668) For good growth of pollen tube, necessary element is Show Answer

Q669) In the angiosperm ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains Show Answer

Q670) Anemophily is pollination by Show Answer

Q671) Polyembryony is a type of Show Answer

Q672) Viability of lupine seed is Show Answer

Q673) Perisprem is Show Answer

Q674) Which of the following statement is true with reference to cross pollination in angiosperms? Show Answer

Q675) In which one of the following pollination is autogamous? Show Answer

Q676) In an angiosperm, male plant is diploid and female plant is tetraploid then endosperm will be Show Answer

Q677) Through which cell of the embryo sac, does the pollen tube enter the embryo sac? Show Answer

Q678) Milky water of tender coconut is Show Answer

Q679) The ovule in which the funicle, chalaza and micropyle lie in one vertical plane, is called Show Answer

Q680) Pericarp is formed of Show Answer

Q681) Which of the following is pollinated by water? Show Answer

Q682) Ubisch bodies are secreted by Show Answer

Q683) Which of the following parts in angiosperms are diploid and triploid, respectively? Show Answer

Q684) Which type of pollen grains are found in insect pollinated flowers? Show Answer

Q685) Male gamete in angiosperm is produced by Show Answer

Q686) Synergids are Show Answer

Q687) Exine of pollen grain is made up of Show Answer

Q688) The process of formation of microspores
I. From pollen mother cell through …A… formed …B…
II. Microspore are arranged in …C…
III. Microspore changes into the …D…
A to D in the above statements are Show Answer

Q689) Viability of pollen grains depends on Show Answer

Q690) 60% of the angiosperms shed their pollens at the Show Answer

Q691) The inner most layer of microsporangium is Show Answer

Q692) Male gametophyte of angiosperms is reduced to Show Answer

Q693) Long , ribbon-like pollen grains are seen in some Show Answer