Practice Test

Q1) Iron is mainly absorbed in Show Answer

Q2) Micronutrients are those elements Show Answer

Q3) Which of the following micronutrients can be absorbed by foliage? Show Answer

Q4) Which of the following elements are not absorbed from soil? Show Answer

Q5) Which of the following is a component of chlorophyll? Show Answer

Q6) One of the ways in which the nitrogen of atmosphere is converted into nitrate for plants is by the action of Show Answer

Q7) The most abundant element in plant is Show Answer

Q8) Minerals of soil are derived from Show Answer

Q9) Trace elements are Show Answer

Q10) Pre-mature leaf-fall is caused due to deficiency of Show Answer

Q11) The chlorophyll is not formed without Show Answer

Q12) Micronutrients Show Answer

Q13) Who gave the criteria of essentiality? Show Answer

Q14) Which one of the following elements is essential for photolysis of water? Show Answer

Q15) Which one of the following plants cannot fix atmospheric nitrogen directly? Show Answer

Q16) In nitrogen cycle, nitrite is converted to nitrate by Show Answer

Q17) Plants absorb mineral salts from the soil solution through Show Answer

Q18) Deficiency of iron causes Show Answer

Q19) Chlorosis occurs when plants are grown in Show Answer

Q20) Which of the following elements is involved in nitrogen metabolism in reduction of nitrates? Show Answer

Q21) The mineral constituent of the cell wall is Show Answer

Q22) Active uptake of minerals by roots mainly depends on the Show Answer

Q23) White bud in maize indicates acute deficiency of Show Answer

Q24) Which of the following would not make minerals more available to plants? Show Answer

Q25) Synthesis of IAA requires Show Answer

Q26) Which of the following is common to ferredoxin and cytochrome? Show Answer

Q27) Most of the minerals as inorganic form are transported through Show Answer

Q28) Mass flow hypothesis explains transport of Show Answer

Q29) Which of the following does not required carrier molecules during transport through cell membranes? Show Answer

Q30) Which of the following is most limiting factor for nitrification in the soil? Show Answer

Q31) Active transport of molecules from outside to inside across a membrane requires Show Answer

Q32) If chlorophyll is burnt, what will be left? Show Answer

Q33) Which one of the following element plays an important role in biological nitrogen fixation? Show Answer

Q34) Photolysis of water is increased by Show Answer

Q35) Which of the following adaptations would not be seen in carnivorous plants? Show Answer

Q36) Which of the following essential mineral elements is not a constituent of any enzyme, but stimulates the reactions of many enzymes? Show Answer

Q37) Ammonium sulphate is a Show Answer

Q38) For normal growth of plants one of the following is not required Show Answer

Q39) Nitrogen from the atmosphere is obtained by plants in the form of Show Answer

Q40) Which one of the following can fix atmospheric nitrogen directly? Show Answer

Q41) Mg and Fe are required by the plants for the Show Answer

Q42) The non-essential element in plant is Show Answer

Q43) An example of anaerobic nitrogen fixing saprophytic bacterium is Show Answer

Q44) Organisms which fix free nitrogen in soil are Show Answer

Q45) Nodules with nitrogen fixing bacteria are present in roots of Show Answer

Q46) Members of bean family are particulary important for rotation of crop Show Answer

Q47) Nitrogen is an essential component of Show Answer

Q48) Mineral matter in soil is due to Show Answer

Q49) Which is a micronutrient? Show Answer

Q50) Minerals are absorbed by roots through mainly by Show Answer

Q51) Which of the following elements can plant take directly from air? Show Answer

Q52) Chlorosis in plants occurs due to Show Answer

Q53) Hydroponics is Show Answer

Q54) Non-essential element for proper growth of plant is Show Answer

Q55) Nitrogen is usually absorbed by the plant in the form of Show Answer

Q56) Insectivorous plants can grow well in a soil deficient in Show Answer

Q57) Without essential mineral nutrients leaves of many plants turn yellow because of Show Answer

Q58) Which element is essential as electron carrier? Show Answer

Q59) Hydroponics is also called as Show Answer

Q60) In the nodules of roots in leguminous plants, we find Show Answer

Q61) Which of the following is obligate stem parasite? Show Answer

Q62) The traps of carnivorous plants contain Show Answer

Q63) Which of the following formulae describes nitrogen fixation? Show Answer

Q64) Plants that have mutualistic relations with nitrogen fixing bacteria provide the bacteria with Show Answer

Q65) The nodule in a palnt root where nitrogen-fixing bacteria live forms from cells of the Show Answer

Q66) Plants, such as clover and beans, that have nitrogen-fixing bacteria in their roots are in which of the following families? Show Answer

Q67) Bacteria that fix nitrogen for such plants as clover and beans are in which of the following genera? Show Answer

Q68) Salt repiration is Show Answer

Q69) Which of the following plants will enrich the soil with nitrogen? Show Answer

Q70) Organisms that fix nitrogen in aquatic habitats are Show Answer

Q71) The need of individual plants for any particular element is normally defined in terms of Show Answer

Q72) Available form of nitrogen to plants is Show Answer

Q73) Nitrogen fixation by organisms requires conditions that are Show Answer

Q74) Molybdenum is involved in Show Answer

Q75) Nitrogen fixation by bacteria requires the enzyme Show Answer

Q76) The conversion of ammonia to ammonium occurs Show Answer

Q77) Plants that have mutualistic relations with nitrogen fixing bacteria receive from the bacteria Show Answer

Q78) An association between a fungus and a root of higher plant is termed as mycorrhiza which is an example of Show Answer

Q79) Which of the following groups of plants can grow in nitrogen deficient soils? Show Answer

Q80) Which one of the following is an obligate stem parasite? Show Answer

Q81) Nodulation of legumes is reduced in deficiency of Show Answer

Q82) A protoplasmic element is Show Answer

Q83) The soluble resources of phosphorus and nitrogen in soil generally get depleted because they are usually found as Show Answer

Q84) Bidirectional translocation of minerals takes place through Show Answer

Q85) The movement of mineral ions into plant root cells as a result of diffusion is called Show Answer

Q86) Function of Mg and Fe is Show Answer

Q87) Which of the following is macronutrient? Show Answer

Q88) Which of the folloiwng is trace element? Show Answer

Q89) The brown colour of leaves of cabbage is due to the deficiency of Show Answer

Q90) The role of inorganic nutrients in plant growth was at first indicated by Show Answer

Q91) The essential nutrient element required by plants in the least quantity is Show Answer

Q92) The essential element for the synthesis of auxin is Show Answer

Q93) The most important element associated with protoplasm and proteinaceous material of plant is Show Answer

Q94) Enzyme catalyzed reactions can be inhibited by Show Answer

Q95) Permeability of protoplasm is accelerated by Show Answer

Q96) Which of the following is not essential for plant growth? Show Answer

Q97) Which of the folloiwng nutrient elements is most important for protein synthesis? Show Answer

Q98) Which of the folloiwng is not major element? Show Answer

Q99) Zinc is essential for Show Answer

Q100) Presence of phosphorus Show Answer

Q101) Ash is of what significance in the study of mineral nutrition of plants? Show Answer

Q102) The presence of an element in plant ash Show Answer

Q103) In plants a common symptom caused by deficiencies of P, K, Ca and Mg is Show Answer

Q104) That the energy of metabolism is used in uptake of ions is demonstrated by Show Answer

Q105) Ion uptake is called active because Show Answer

Q106) The efflux of ions from the cell is enhanced by Show Answer

Q107) Micronutrient absorbed by foliage is Show Answer

Q108) Nitrogen absorbed by plants is Show Answer

Q109) Sand culture is a component of Show Answer

Q110) Inorganic nutrients are present in the soil as Show Answer

Q111) Clay and organic matter of the soil have negative charges. They attract positively charged ions like Show Answer

Q112) Which of the followng is required by plants for the formation of ATP? Show Answer

Q113) Magnesium is important component of Show Answer

Q114) Plants use Zinc as Show Answer

Q115) ATP molecules combine with carrier molecules and allow passage of substances Show Answer

Q116) Enzyme first used for nitrogen fixation Show Answer

Q117) This is an insectivorous plant Show Answer

Q118) Which of the following is non-symbiotic? Show Answer

Q119) Trace element in plants is Show Answer

Q120) Which of the following element is essential for nitrogoen metabolism in plants? Show Answer

Q121) Plants absorb nitrogen in the form of Show Answer

Q122) Which element is located at the center of the porphyrin ring in chlorophyll? Show Answer

Q123) The major role of minor elements inside living organisms is to act as Show Answer

Q124) Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone Show Answer

Q125) The most abundant element found in plants in Show Answer

Q126) Yellowish edges appear in leaves deficient in Show Answer

Q127) Microelements function as Show Answer

Q128) Element required for biological nitrogen fixation is Show Answer

Q129) Copper is activator in enzyme Show Answer

Q130) The ability of the Venus Flytrap to capture insects is due to Show Answer

Q131) All of the following statements concerning the actionmycetous filamentous soil bacterium Frankia are correct EXCEPT that Frankia Show Answer

Q132) If there is deficiency of micronutrients that not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport Show Answer

Q133) The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below which group of three elements shall affect most both photosynthetic and mitochondrial electron trasport? Show Answer

Q134) Which is essential for root hair growth? Show Answer

Q135) A plant required magnesium for Show Answer

Q136) Which one of the following elements is not an essential micro-nutrient for plant growth? Show Answer

Q137) The function of leghaemoglobin in the root nodules of legumes is Show Answer

Q138) Plants absorb large number of minerals from the soil. Out of over 105 elements discovered, so far, how many are essential for plant growth and metabolism? Show Answer

Q139) Macronutrients must generally be present in plant tissue in concentration of Show Answer

Q140) Which of the following is a set micronutrients for plants required in small amount of about 0.1 mg per gm of dry matter? Show Answer

Q141) Which of the following statements is incorrect? Show Answer

Q142) Nitrogen is required by plants in greatest amount. It is one of the major constituents of proteins, nucleic acids, vitamins and hormones. It is absorbed as Show Answer

Q143) Deficiency of phosphorus in plants causes Show Answer

Q144) Movement of ions from soil to plants require energy and is termed Show Answer

Q145) The ion channels are Show Answer

Q146) Mineral nutrients absorbed by root are carried to xylem by which pathway? Show Answer

Q147) Mineral salts are translocated through xylem in the plants was proved by Show Answer

Q148) Nitrites into nitrates conversion is done by Show Answer

Q149) The approximate percentage of nitrogen fixed biologically is Show Answer

Q150) The Rhizobia are Show Answer

Q151) The nitrate reduction and nitrite reduction occurs respectively in Show Answer

Q152) Calcium is essential for maintaining permeability of cell membrane but which one if called balancing element? Show Answer

Q153) The main respons of boron deficiency is visible in Show Answer

Q154) Enzyme nitrogenase is responsible for Show Answer

Q155) Plants growing near the nuclear test sites take up and accumulate which of the following elements? Show Answer

Q156) Name the minerals responsible for maintaining cation-anion balance in the plant cells Show Answer

Q157) What is the major function of air stone? Show Answer

Q158) Which of the following are considered as the roles of iron (Fe) in plants?
I. Important constituent of cytochrome
II. Activator of catalase
III. Essential for chlorophyll synthesis
Choose the correct option Show Answer

Q159) By applying which of the following practices, contamination of hydroponics plants can be reduced? Show Answer

Q160) An essential element is that which Show Answer

Q161) Essential elements perform many functions which includes
I. Permeability of the cell membrane
II. Maintenance of osmotic concentration of the cell sap
III. Major constituents of macromolecules and coenzymes
IV. Buffering action
Choose the correct option Show Answer

Q162) Which of the following metals causes harmful effects? Show Answer

Q163) Nitrogen is mainly absorbed in the form of Show Answer

Q164) In the initial phase of minerals absorption ions are taken up Show Answer

Q165) Which of the following is true regarding manganese toxicity in plants? Show Answer

Q166) Sulphur is found as a constituent in which of the following amino acids? Show Answer

Q167) Hydroponics has been successfully employed as a technique for which of the following vegetables? Show Answer

Q168) For the uptake of ions in the second phase of absorption of minerals, the pathway followed is called Show Answer

Q169) How many essential mineral elements have been discovered yet? Show Answer

Q170) Which of the following is a rootless aquatic plant in which a portion of the leaf forms a tiny sac for
trapping insects? Show Answer

Q171) Which of the given options are correct for hydroponics? Select the correct pair
I. Hydroponics technique is useful in areas having infertile and dry soils
II. Hydroponics can regulate pH optimum for a particular crop
III. It increases the labour cost
IV. It increases the problem of weeding Show Answer

Q172) Insectivorous plants eats the insect for Show Answer

Q173) Aeroponics are Show Answer

Q174) Insectivorous plants eats insects for their requirement of Show Answer

Q175) Molybdenum is the essential constituent of Show Answer

Q176) Select the correct statement. Show Answer

Q177) Which among the following are used as media for hydroponics? Show Answer

Q178) The core metal of chlorophyll is Show Answer

Q179) Identify the elements which functions as the components of biomolecules
I. Hydrogen II. Magnesium
III. Oxygen IV. Nitrogen Show Answer

Q180) Potassium is required by which of the following regions of plants
I. Meristematic tissues II. Buds
III. Leaves IV. Root tips Show Answer

Q181) In root nodules of legumes, leghaemoglobin is important because it Show Answer

Q182) The number of essential elements known for the growth and reproduction of plants is Show Answer

Q183) Which of the following minerals activate the enzymes involved in respiration? Show Answer

Q184) Which of the following is not caused by deficiency of mineral? Show Answer

Q185) The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in
leguminous root nodule is Show Answer

Q186) Soil is able to maintain a regular supply of minerals by the help of which of the following?
I. Slow vegetation
II. Activity of decomposers
III. Soil erosion
IV. Weathering of rocks Show Answer

Q187) Select the match ones.
I Nitrosomonas – Nitrite to nitrate
II Thiobacillus - Denitrification
III Nostoc - Free-living nitrogen-fixer
IV Azotobacter - Anaerobic nitrogen-fixer Show Answer

Q188) In hydroponics, chelating agent is used to Show Answer

Q189) The term ‘outer space’ represents …A…, while ‘inner space’ represents …B… with reference to absorption
of minerals
Identify A and B to complete the given statement Show Answer

Q190) Hydroponic tomatoes may not taste so fresh. Why? Show Answer

Q191) Which of the following is used as a chelating agent in hydroponics? Show Answer

Q192) Sulphur is an important nutrient for optimum growth and productivity in Show Answer

Q193) Which of the following are reservoirs for phosphorus and nitrogen cycle respectively? Show Answer

Q194) Insectivorous plants live in a soil that is usually deficient in Show Answer

Q195) Humans is essential for plant growth because Show Answer

Q196) Read the functions given below and identify the concerned nutrient
I. Activator of catalase
II. Important constituent of cytochrome
III. Important constituent of proteins involved in ETS
IV. Essential for chlorophyll synthesis Show Answer

Q197) Nitrogen is present in the soil in the form of
I. Nitrates
II. Ammonical salts
III. Nitrite
IV. None of these Show Answer

Q198) The deficiencies of micronutrients not only affects growth of plants but also vital functions, such
as photosynthetic and mitochondrial electron flow. Among the list given below, which group of
three elements shall affect most, both photosynthetic and mitochondrial electron transport? Show Answer

Q199) Which of the following is a bacterium involved in denitrification? Show Answer

Q200) Which of the following is one of the component of ATP? Show Answer

Q201) Hydroponics is a technique of growing plants in a Show Answer

Q202) Which of the following is an example of nutrient in its reduced form? Show Answer

Q203) The source of energy for non-biological nitrogen fixation is Show Answer

Q204) What effect can be seen on the plant growth and reproduction in the absence of essential mineral element? Show Answer

Q205) ‘mottled chlorosis’ on the leaves occurs due to the deficiency of Show Answer

Q206) Maximum percentage of which element occurs in plant ash? Show Answer

Q207) Which one of the following is an amide involved in nitrogen assimilitaion by plants? Show Answer

Q208) Which of the following is considered as partial mineral elements in plants? Show Answer

Q209) Hydroponics is the growth of plants in Show Answer

Q210) The major characteristics of colloids is/are Show Answer

Q211) Mark the statements as true/ false by choosing the correct option from the set (I-IV) given below
I. Magnesium is a constituent of chlorophyll and helps to maintain the ribosome structure
II. Calcium is needed during the formation of mitotic spindle
III. Magnesium is essential for the photolysis of water
IV. Zinc helps in sugar translocation Show Answer

Q212) Free living nitrogen fixing bacteria are Show Answer

Q213) Name the essential element that is considered as the component of energy related to chemical compound
like chlorophyll Show Answer

Q214) What is the correct unit for measuring nutrients in hydroponics nutrient solution? Show Answer

Q215) Which of the following reaction shows nitrogen fixation? Show Answer

Q216) For the limited nitrogen that is present in the soil, microbes compete with Show Answer

Q217) Julius Von Sachs, who demonstrated hydroponics for the first time, was a German Show Answer

Q218) Farmers in a particular region were concentrated that pre-mature yellowing of leaves of a pulse
crop might cause decrease in the yield. Which treatment could be most beneficial to obtain
maximum seed yield? Show Answer

Q219) In the hydroponics plant production technique, in order to obtain the optimum growth, nutrient solutions
must be Show Answer

Q220) Based on the quantitative requirement of elements by the plants, these elements are called Show Answer

Q221) The number of essential nutrients needed in plants is Show Answer

Q222) One of the following is called pitcher plant Show Answer

Q223) Minerals involved in redox reactions in plant cells are Show Answer

Q224) The conversion of nitrate to nitrogen is called Show Answer

Q225) Enzyme required for nitrogen fixation is Show Answer

Q226) For the proper management of diseased conditions in hydroponics, it is important to Show Answer

Q227) Which of the following statements are not correct in reference to hydroponics?
I. It determines the mineral nutrients essential for the plants
II. The hydroponics involves the culture of plants in a soil with, defined mineral solution
III. Hydroponics requires purified water with non-defined mineral nutrient salts
IV. In the hydroponics technique, plants are grown in sandy soil with nutrient solution
V. By this method, essential elements required for the growth of plants can be identified and their
deficiency symptoms can also be discovered
Choose the correct options Show Answer

Q228) Quantity of macronutrients that is generally found in plant is Show Answer

Q229) Who proved for the first time that the plants contain a large number of minerals and
microelements? Show Answer

Q230) The optimum temperature preferred for the plant growth is Show Answer

Q231) Which of the following elements is not an essential micronutrient for plant growth? Show Answer

Q232) Which of the following gene is responsible for biological nitrogen fixation? Show Answer

Q233) Hydroponics are of three types …A…, a film system and …B…
Choose the correct pair from the option given below Show Answer

Q234) Deficiency of which to the following can cause yellowing of intravenous regions of leaves? Show Answer

Q235) The technique of growing plants in a nutrient solution in the complete absence of soil is called Show Answer

Q236) Who demonstrated the concept of hydroponics for the first time? Show Answer

Q237) Appearance of yellowish edges in the leaves is due to deficiency of Show Answer

Q238) VAM is Show Answer

Q239) Nitrogen is required mainly by which of the following parts of the plants?
I. Meristematic tissues
II. Differentiating tissues
III. Apical tissues
IV. Metabolically active cell
Choose the correct option Show Answer

Q240) Choose the correct options Show Answer

Q241) Macronutrients like carbon, hydrogen and oxygen are obtained mainly from Show Answer

Q242) For a seed to germinate, the most important thing needed is Show Answer

Q243) The entry and exit of ions to and from the symplast requires the expenditure of Show Answer

Q244) A plant requires magnesium for Show Answer

Q245) Which element is required for the germination of pollen grains? Show Answer

Q246) The area around the plant roots is called Show Answer

Q247) The ultimate source of nitrogen is Show Answer

Q248) Select from the given options, which is the most commonly obtained commercial flower crop in
hydroponics? Show Answer

Q249) Which one of the following elements in plants is not remobilised? Show Answer

Q250) The plant ash indicates Show Answer

Q251) In the final phase of mineral absorption, ions are taken up into the …… space of cells Show Answer

Q252) Major disadvantages of hydroponics include Show Answer

Q253) The nutrient solution in flowering culture hydroponics Show Answer

Q254) Which of the following elements can be considered as macronutrients for plants? Show Answer

Q255) The process of decay of dead organic matter is known as Show Answer

Q256) Nitrogen is absorbed by the plants in the form of Show Answer

Q257) Grey spots of oat are caused by deficiency of Show Answer

Q258) A nutritionally wild type organism, which does not require any additional growth supplement is
known as Show Answer

Q259) Which of the following elements is considered as beneficial elements in higher plants? Show Answer

Q260) Which of the following is limiting nutrient for both natural and agricultural ecosystems? Show Answer

Q261) Plant deficient of element zinc, shows its effects on the biosynthesis of plant growth hormone Show Answer

Q262) Julius Von Sachs, who demonstrated hydroponics first, was from Show Answer

Q263) Which of the following is not considered as a trace element (micronutrient) in the plant? Show Answer

Q264) Maximum amount of macronutrients that are generally present in plant tissue is Show Answer

Q265) Which of the following shows the deficiency symptoms of nitrogen in plants? Show Answer

Q266) Which of the following is a macronutrient? Show Answer

Q267) Which of the following statements are correct about mineral absorption in plants? Show Answer

Q268) For the uptake of ions in the first phase of absorption of minerals, the pathway followed is called Show Answer

Q269) Necrosis is the term used for the Show Answer

Q270) Cuscuta is a Show Answer

Q271) Which form of nitrogen enters in the plants Show Answer

Q272) Manganese is required in Show Answer

Q273) Nitrite is coverted to nitrate by Show Answer

Q274) Molybdenum causes Show Answer

Q275) Nitrogen is a constituent of Show Answer

Q276) Necrosis or death if tissue particularly leaf tissue, is due to the deficiency of Show Answer

Q277) The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is
to Show Answer

Q278) The macronutrient which is an essential component of all organic compounds, yet not obtained
by plants from soil is Show Answer

Q279) The process of transfer of amino group from one amino acid to the keto group of a keto acid is called Show Answer

Q280) What is the correct order of nitrogen assimilation? Show Answer

Q281) Nitrification is the process of conversion of Show Answer

Q282) Which of the following is a nitrogen-fixing organism? Show Answer

Q283) Media, which is used most commonly in hydroponics is Show Answer

Q284) Which of the following gene clusters in bacteria is responsible for nitrogen fixtion? Show Answer

Q285) Anabaena, which is extensively used in rice cultivation, forms symbiotic association with Show Answer

Q286) Nitrates are converted into nitrogen by Show Answer

Q287) The appearance of yellow edges in leaves is due to the deficiency of this mineral element. Show Answer

Q288) Minerals are absorbed by plants in Show Answer

Q289) Which of the following is not an insectivorous plant? Show Answer

Q290) An element playing important role in nitrogen fixation is Show Answer

Q291) Copper is present in Show Answer

Q292) Which of the following is used as an alternative for minerals? Show Answer

Q293) The molecular nitrogen is correctly termed as Show Answer

Q294) The deficiency of this micronutrient results in little leaf disease. Show Answer

Q295) Zn, Mo, Fe, Cu are Show Answer

Q296) Bacteria and fungi developing on dead decaying organisms are Show Answer

Q297) Name the elements, which occur in nucleic acid macromolecule? Show Answer

Q298) Enzymes involved in nitrogen metabolism is Show Answer

Q299) Select the incorrect statement Show Answer

Q300) Two nitrogen atoms are joined by Show Answer

Q301) Which of the following is considered to be the best chemical method of fixing atmospheric
nitrogen? Show Answer

Q302) Which of the following elements play a major role in nitrogen metabolism by activating the enzyme,
nitrogenase? Show Answer

Q303) Chlorosis is Show Answer

Q304) On the basis of symptoms of chlorosis in leaves, a student inferred that this was due to the
deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves
appeared first in Show Answer

Q305) Choose a true statement regarding essential mineral elements of plants Show Answer

Q306) The insectivorous plants are Show Answer

Q307) In the initial phase of mineral absorption, ions are taken up into the …… space of cells Show Answer

Q308) Absorption of minerals takes place in the form of Show Answer

Q309) A metal ion involved in stomatal regulation is Show Answer

Q310) Find out odd one form the following options by considering its role in nitrogen cycle. Show Answer

Q311) While producing hydroponic plants, which of the following metal is added along with EDTA? Show Answer

Q312) Which one of the following is not a micronutrient? Show Answer

Q313) About 98% of the mass of every living organism is composed of just six element including carbon,
hydrogen, nitrogen, oxygen and Show Answer

Q314) Which of the following method is close to hydroponics and has the same principle? Show Answer

Q315) Plants uptake minerals present in the soil, mostly through Show Answer

Q316) Boron in green plants assists in Show Answer

Q317) Which of the following mineral deficiencies will cause death of stem and root tips? Show Answer

Q318) Which among the following is the major constituent of proteins, nucleic acids, vitamins and hormones? Show Answer

Q319) Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing
microorganism? Show Answer

Q320) Which one of the following is a micronutrient in plants? Show Answer

Q321) In which of the following conditions, plants cannot be grown? Show Answer

Q322) One of the major function of essential elements is Show Answer

Q323) Efflux is the movement of ions Show Answer

Q324) If by radiation all nitrogenase enzymes are inactivated, then there will be no Show Answer

Q325) The process of conversion of nitrogen to ammonia is termed as Show Answer

Q326) Identify the non-leguminous plants that forms nodules to fix nitrogen Show Answer

Q327) The minerals involved in water-splitting reaction during photosynthesis are Show Answer

Q328) Nitrifying bacteria Show Answer

Q329) Micronutrients are Show Answer

Q330) A small aquatic plant was put in each of the petri dishes- X, Y and Z, containing different culture
solutions. After six weeks, the plant in dish-X had the same number of leaves as it had previously
and were all small and yellowish. Plant in dish-Y had more leaves of normal size and dark green
colour. Plants in dish-Z had more leaves of normal size but very pale. Which of the following show
the elements missing the culture? Show Answer

Q331) Essential ions are absorbed in different amounts by Show Answer

Q332) Which of the following is/are not an essential micro nutrient? Show Answer

Q333) For the existence of nitrogen, how many nitrogen atoms are required? Show Answer

Q334) In the final phase of mineral absorption ions are taken up Show Answer

Q335) Which of the following statement is true about the passive uptake of ions? Show Answer

Q336) Active transport of ions by the cell requires Show Answer

Q337) If the size of fruits diminishes in plants, which mineral ion should be added to soil? Show Answer

Q338) Mineral element required by plants in the greatest amount is Show Answer

Q339) Premature leaf fall is due to deficiency of Show Answer

Q340) An element must be considered essential, when
I. the element is necessary for supporting normal growth and reproduction of the plants
II. the deficiency of that particular element can not be met by supplying some other element
III. the element is directly involved in the metabolism of the plants. Choose the correct pair Show Answer

Q341) Soilless culture helps in knowing Show Answer

Q342) Chlorosis is caused due to deficiency of Show Answer

Q343) I. The practice of growing plants in nutrient enriched water without soil is called ….
II. The system of growing plants with their roots bathed in nutrient mist (a cloud of moisture in air) is
called…..
Complete the given statement (I and II) with the correct pair of options given below Show Answer

Q344) A plant which lives on another plant but do not take food or anything from plant is called Show Answer

Q345) In addition to known essential elements, there are some beneficial elements. These are required by the Show Answer

Q346) For nitrogen fixation, useful pigment is Show Answer

Q347) Fe can be taken by plants in the form of Show Answer

Q348) Necrosis in crops is due to the deficiency of Show Answer

Q349) Hydroponics were first time demonstrated in the year Show Answer

Q350) The structure present in cynobacteria (BGA) that helping in nitrogen fixation is Show Answer

Q351) Statement 1: Leguminous plants are nitrogen fixers
Statement 2: Leguminous plants have Rhizobium in their root nodules Show Answer

Q352) Statement 1: Some essential elements can alter the osmotic potential of a cell
Statement 2: Osmotic potential can be regulated by potassium Show Answer

Q353) Statement 1: Hydroponics requires purified water mineral nutrient salts
Statement 2: Purified water and mineral salts are always not essential for the growth of hydroponics Show Answer

Q354) Statement 1: Active absorption of minerals is inhibited when the roots are deprived of oxygen
Statement 2: Active absorption of minerals requires expenditure of metabolic energy, which comes
from respiration in the presence of oxygen Show Answer

Q355) Statement 1: Deficiency of sulphur causes chlorosis in plants
Statement 2: Sulphur is a constituent of chlorophyll, proteins and nucleic acids Show Answer

Q356) Statement 1: Activator of the enzyme reductase is manganese
Statement 2: Manganese deficient plants cells prefers ammonia over nitrate Show Answer

Q357) Statement 1: Every plant can grow in a suitable mineral solution only (i.e., without soil)
Statement 2: Hydroponics do not helps in the identification of essential elements and deficiency
symptoms of the plants Show Answer

Q358) Statement 1: Nitrogen-fixing enzyme in legume root nodules functions at low oxygen
concentration.
Statement 2: Low oxygen concentration is provided by leghaemoglobin Show Answer

Q359) Statement 1: Warm nutrient solution is better than cold solution for producing hydroponics
Statement 2: Warm solution holds of greater amount of oxygen than cold solution Show Answer