Practice Test


Q1) Chemical produced by mould Penicillium notatum did not allow the growth of Staphylococci bacteria, thus penicillin was established as antibiotic. Who established its effective potential? Show Answer


Q2) Before disposal, sewage is treated in sewage treatment plants (STPs). It is done by which microbes present naturally in sewage: Show Answer


Q3) Greater the BOD of sewage water, its polluting ability is: Show Answer


Q4) Lady bird beetle and dragon flies are useful to get rid of Show Answer


Q5) A biological control being developed for use in treatment of plant diseases is Trichoderma. It is a: Show Answer


Q6) Adeno virus, a bacteriophage causes Show Answer


Q7) Prions are: Show Answer


Q8) Wine and beer are produced: Show Answer


Q9) Which of the following acts competitively inhibiting enzyme responsible for synthesis of cholesterol: Show Answer


Q10) Sunn hemp fibres are obtained from: Show Answer


Q11) Associated symbiosis is shown by: Show Answer


Q12) Which of the following is a free living bacterium? Show Answer


Q13) Thurioside is a: Show Answer


Q14) Confusion technique is used in: Show Answer


Q15) Cochineal insects have been employed in checking overgrowth of: Show Answer


Q16) Materials of biological origin which are commonly used to maintain and improve soil fertility are: Show Answer


Q17) VAM is characterized by: Show Answer


Q18) Pick up the free living cyanobacterium: Show Answer


Q19) Mycorrhizal hyphae prove useful to the plant by: Show Answer


Q20) Ectomycorrhiza is found: Show Answer


Q21) Select the one which is not related to Rhizobium: Show Answer


Q22) Farmyard manure is prepared from: Show Answer


Q23) Which one of the following is free living nitrogen fixing cyanobacterium? Show Answer


Q24) Vesicular Arbuscular Mycorrhizae are: Show Answer


Q25) Pick up the natural insecticide prepared by Chinese: Show Answer


Q26) Biopesticides are: Show Answer


Q27) Major sources of biofertilizers are: Show Answer


Q28) Pheromones are secreted: Show Answer


Q29) Mycorrhiza is a: Show Answer


Q30) The overgrowth of cacti was checked by the introduction of: Show Answer


Q31) An ideal pesticide is one which: Show Answer


Q32) Which of the following alkaloids are good plant insecticides? Show Answer


Q33) The compound extracted from neem which keeps away the insects is: Show Answer


Q34) Which of the following is a good fire wood source in India? Show Answer


Q35) Which of the following are biofuels? Show Answer


Q36) A petroleum plant is: Show Answer


Q37) Pyrolysis of wood produces: Show Answer


Q38) Main source of energy for a plant is: Show Answer


Q39) For biogas production, besides dund which of the following weed is recommended in our country? Show Answer


Q40) Non-renewable substance or resource is: Show Answer


Q41) Biogas production rate is limited by: Show Answer


Q42) The first step in biogas production is: Show Answer


Q43) Fuel wood is: Show Answer


Q44) Daily input of sunlight per square metre per day on the earth is: Show Answer


Q45) Which of the following is the non-conventional source of energy? Show Answer


Q46) HMP is a bioenergy obtained from: Show Answer


Q47) Biogas contains: Show Answer


Q48) Raising of crops for the production of ethanol is known as: Show Answer


Q49) Which of the following can be used in place of petrol? Show Answer


Q50) Which of the following are energy crops? Show Answer


Q51) In which of the following countries alcohol has been successfully used as motor fuel? Show Answer


Q52) In which of the following forms animal energy is available? Show Answer


Q53) Which of the following liquid hydrocarbon? Show Answer


Q54) Gas produced as a result of anaerobic fermentation of agricultural wastes is: Show Answer


Q55) Social forestry is: Show Answer


Q56) Calorific value of biogas is: Show Answer


Q57) Farmers have reported over 50% higher yields of rice by using the biofertilizer: Show Answer


Q58) Biological control component is central to advacnced agricultural production. Which of the following is used as a third generation pesticide? Show Answer


Q59) Which one of the following is non-symbiotic biofertilizer? Show Answer


Q60) A biofertilizer is: Show Answer


Q61) Which organism serves as a biofertilizer Show Answer


Q62) Azotobacter and Bacillus polymyxa are: Show Answer


Q63) The phenomenon of using a predator for controlling a pest is: Show Answer


Q64) Crop rotation is carried out for: Show Answer


Q65) Nitrogen fixation is: Show Answer


Q66) Leghaemoglobin occurs in: Show Answer


Q67) BGA is chiefly used as fertilizer in: Show Answer


Q68) Which element plays an important role in nitrogen fixation? Show Answer


Q69) Mycorrhiza represents: Show Answer


Q70) The biological control of agricultural pests, unlike, chemical control is: Show Answer


Q71) The neem is used as a natrual insecticide because: Show Answer


Q72) Which of the following helps in absorption of phosphorus from soil by plants? Show Answer


Q73) Secondary sewage treatment is mainly a: Show Answer


Q74) Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? Show Answer


Q75) The most common substrate used in distilleries for the production of ethanol is: Show Answer


Q76) Ethanol is commercially produced through a particular species of: Show Answer


Q77) A prokaryotic autotrophic nitrogen fixing symbiont is found in: Show Answer


Q78) Which one of the following is not a biofertilizer? Show Answer


Q79) Continuous addition of sugars in 'fed batch' fermentation is done to: Show Answer


Q80) Which one of the following is a correct statement about biogas? Show Answer


Q81) For biogas production beside during, which of the following is used? Show Answer


Q82) Besides dung the weed which can be used in biogas production is: Show Answer


Q83) Both power and manure are provided by: Show Answer


Q84) The country pioneer in production of fuel alcohol is: Show Answer


Q85) With the exception of water, which one is possible the most important accessory chemical substance in industrial process? Show Answer


Q86) Product obtained from the plants of which family can be alternative of liquid fluid? Show Answer


Q87) Which one of the following being utilized as a source of biodiesel in the Indian countryside? Show Answer


Q88) The nodulated roots are found in: Show Answer


Q89) Composited manure consists of: Show Answer


Q90) Which of the following plants is commonly used as green manure in India? Show Answer


Q91) Which of the following is required for better nitrogen fixation of Rhizobium? Show Answer


Q92) Azolla enriches rice field with nitrogen due to its association with: Show Answer


Q93) Rotation with smother crops is useful for: Show Answer


Q94) Transgenic crops are useful as they have genes of: Show Answer


Q95) The total consumption of fertilizers in India is about: Show Answer


Q96) The requirement of fertilizers by the end of century would be: Show Answer


Q97) Sporeine was developed in: Show Answer


Q98) Biopesticides include: Show Answer


Q99) Devine' and 'Collego' are two agricultural substances that are used as: Show Answer


Q100) Antifeedant property is found in: Show Answer


Q101) A biodegradable insecticide has been obtained from: Show Answer


Q102) Phosphobacteria contains: Show Answer


Q103) Biological control means: Show Answer


Q104) Sesbania rostrata is preferred as green manure over other species because: Show Answer


Q105) Ectomycorrhiza absorbs and stores N, P, K and Ca in: Show Answer


Q106) Biocontrol of larvae of mosquito is done by: Show Answer


Q107) A straight fertilizer is the one which is: Show Answer


Q108) A bad fire-wood is that of: Show Answer


Q109) Number of persons dependent upon wood as fuel is: Show Answer


Q110) City refuge mainly consists of: Show Answer


Q111) Who is credited with identifying petrocrops? Show Answer


Q112) Pyroligneous acid produced during pyrolysis of wood is: Show Answer


Q113) Methane content of biogas is: Show Answer


Q114) Aquatic plant used in biogas generation is: Show Answer


Q115) In Brazil, 90% of cars are running on: Show Answer


Q116) The energy potential of DAP is equal to: Show Answer


Q117) Energy plantations differ from energy cropping in being: Show Answer


Q118) Thar desert is expanding at the rate of: Show Answer


Q119) Producer gas is used for: Show Answer


Q120) Wood gas is used as: Show Answer


Q121) Leucaena, a new plant for social forestry, is recommended for: Show Answer


Q122) 50 kg of fresh cow dung yields biogas: Show Answer


Q123) Various resources of bioenergy are: Show Answer


Q124) The first step during biomass production is: Show Answer


Q125) The lignin present in biomass is not digested then which controls the rate of biogas production? Show Answer


Q126) Microbes are diverse which include -
A. Bacteria
B. Mosses
C. Protozoans
D. Fungi Show Answer


Q127) Microbes are present in -
A. Soil
B. Air
C. Water
D. Thermal springs Show Answer


Q128) Which of the following bacteria help in nitrogen fixation from atmosphere?
A. Azotobacter
B. Rhizobium
C. Azospirillum
D. Lactobacillus Show Answer


Q129) Yeast have been used for the commercial production of -
A. wine
B. whisky
C. ethanol
D. curd Show Answer


Q130) The distillation of the fermented broth is required in the formation of -
A. rum
B. beer
C. brandy
D. whisky Show Answer


Q131) Symbiotic asociation is exhibited by -
A. mycorrhiza
B. Rhizobium
C. heterocyst
D. Yeast Show Answer


Q132) Methanogens grow anaerobically on cellulosic material and produce -
A. methane
B. oxygen
C. carbon dioxide
D. hydrogen Show Answer


Q133) The technology of biogas production in India has been developed by the efforts of -
A. Khadi and Village Industries Commission (KVIC)
B. Indian Council of Agricultural Research (ICAR)
C. Indian Agricultural Research Institute (IARI)
D. Indian Council of Medical Research (ICMR) Show Answer


Q134) Which of the following cyanobacteria can fix atmospheric nitrogen?
A. Nostoc
B. Anabaena
C. Oscillatoria
D. Yeast Show Answer


Q135) Which of the following food items is produced by fermentation by the microbes?
A. Idli
B. Dosa
C. Toddy
D. Cheese Show Answer


Q136) Microbes are found Show Answer


Q137) The nutritive media for growing bacteria and other microorganisms in the laboratory is called Show Answer


Q138) Which of the following bacteria convert milk into curd? Show Answer


Q139) Which role is played by lactic acid bacteria (LAB) in our stomach? Show Answer


Q140) The dough used for making bread is fermented by Show Answer


Q141) Which of the following is used in preparing cheese? Show Answer


Q142) The large vessels for growing microbes on an industrial scale are called Show Answer


Q143) The gas responsible for puffing-up appearance of dough comes from Show Answer


Q144) Which of the following antibiotics discovered first? Show Answer


Q145) Acetic acid is produced by a Show Answer


Q146) Citric acid is produced by Show Answer


Q147) Which of the following bacteria has a role in removing clots from our blood vessels? Show Answer


Q148) Statins used for lowering blood-cholesterol level are extracted from Show Answer


Q149) The bioactive molecule cyclosporin. A is used in Show Answer


Q150) Cyclosporin A is produced from Show Answer


Q151) The primary treatment of sewage involves Show Answer


Q152) The amount of oxygen required by the microbes in the decomposition of organic matter is called Show Answer


Q153) The mixture of gases released during anaerobic digestion of sludge is called Show Answer


Q154) Biogas contains Show Answer


Q155) The symbiotic association between fungi and roots of higher plants is called Show Answer


Q156) The organisms which are used to enrich the nutrient quality of the soil are called Show Answer


Q157) The bacteria was discovered by Show Answer


Q158) The bacterium that commonly lives in animal and human intestines is Show Answer


Q159) Streptomycin is produced from Show Answer


Q160) The main difference between Gram-positive and Gram-negative bacteria lies in Show Answer


Q161) Which one of the following sets includes bacterial diseases? Show Answer


Q162) Streptomyces rimosus is the source of the antibiotic Show Answer


Q163) During which stage of sewage treatment microbes are used? Show Answer


Q164) Which of the following serve as biofertilizer in paddy fields? Show Answer


Q165) Which antibiotic was extensively used to treat American soldiers wounded in World War II? Show Answer


Q166) The solids which settle after primary treatment of sewage are called Show Answer


Q167) Given below are three statements (A-B) each with one or more blanks. Select the option which correctly fills the blanks in the statement.
Statements :
A. The dough which is used to prepare idli and dosa is fermented by ______ and ______. The puffy appearance of dough is due to the release of _______ by these microorganisms.
B. Microbes are also used in commercial production of certain organic acids. Butyric acid is produced by _______ and lactic acid is produced by ________. Show Answer


Q168) Given below are three statements (A-B) each with one or more blanks. Select the option which correctly fills the blanks in the statement.
Statements :
A. Bioactive molecule, _______ is used as immunospuppressive agent in organ transplant patients, it is produced by the fungus _______.
B. Primary treatment of sewage involves physical removal of small and large particles through ________. Show Answer


Q169) Given below are two statements (A-B) each with one or more blanks. Select the option which correctly fills the blanks in the statements.
Statements :
A. Terramycin is an antibiotic isolated from ______ and interfere with the _______ of disease causing bacteria.
B. Microorganisms (e. g. bacteria, yeast, filamentous fungi, algae etc.) that can be cultured on a commercial scale in fermentor and used as a food source or as animal feed are called ________. Show Answer


Q170) Given below are three statements (A-B) each with one or more blanks. Select the option which correctly fills the blanks in the statement.
Statements :
A. Statins produced by the yeast, ________ have been commercialized as blood cholesterol lowering agents.
B. __________ contains insecticidal crystal proteins thurioside, which is stomach poison and highly insect specific. Show Answer


Q171) Given below are three statements (A-B) each with one or more blanks. Select the option which correctly fills the blanks in the statement.
Statements :
A. __________ a traditional drink of some parts of South India is made by fermenting sap from palms.
B. Cirtric acid is obtained through the fermentation carried out by ______ and ______on sugary syrups.
C. In ________ the fungus forms a mantle on the surface of the roots. Show Answer


Q172) Which of the following statements is correct?
A. Single cell protein is rich in high quality proteins but poor in fat.
B. BOD is the amount of oxygen that would be consumed if all the inorganic matter in one litre of water were oxidised by bacteria.
C. Trichoderma sp are free living fungi that are effective biocontrol agents of several pathogens.
D. Baculoviruses are pathogens that attack insects and other arthropods.
E. Bacillus thuringiensis is first used biopesticide.
F. Lactase enzyme is used in alcoholic fermentation.
G. Mycorrhiza is a symbiotic association between fungi e.g. Glomus and vascular plant. Show Answer


Q173) Benefits of mycorrhizae are -
A. Resistance to root-borne pathogens
B. Tolerance to salinity and absorption of phosphorus
C. Tolerance to drought
D. Overall increase in the plant growth and development Show Answer


Q174) In cheese manufacture, the micro-organisms are used for Show Answer


Q175) Which one(s) is/are correct about Cyclosporin A? Show Answer


Q176) Antibiotics are used to treat diseases like Show Answer


Q177) Choose the correct sequence of microbes involved in biogas production Show Answer


Q178) Baculoviruses (Nucleopolyhedrovirus) does not show Show Answer


Q179) Enzyme which has the fibrinolytic effect is Show Answer


Q180) Swiss cheese is associated with which of the following? Show Answer


Q181) The advantage, the fungi derive from mycorrhizal association with plants Show Answer


Q182) Which of the following statements about mycorrhizae is false?
I. In ectomycorrhizae, association between the fungus and plant is less intimate than in endomycorrhizae.
II. The mycorrhizal association of fungus and the plant may have had importance in the evolution of land plant.
III. The mycorrhizal association is a mutualistic symbiosis.
IV. Fungal partner is associated with the only roots of the higher plants (like angiosperms).
V. Only advanced modern plants such as angiosperms possess mycorrhizae. Show Answer


Q183) Types of alcoholic beverages obtained depend on Show Answer


Q184) Which of the following is false? Show Answer


Q185) Mycorrhiza is found in Show Answer


Q186) Which of the following enzymes is not used in making detergent? Show Answer


Q187) The reason that the chemical/synthetic fertilizers should be replaced by biofertilizers is that the former Show Answer


Q188) Select the correct statement Show Answer


Q189) Organic farming includes Show Answer


Q190) Consider the following statements (A-D) about organic farming:
A. Utilizes genetically modified crops like Bt cotton.
B. Uses only naturally produced inputs like compost.
C. Does not use pesticides and urea.
D. Produces vegetables rich in vitamins and minerals.
Which of the above statements are correct? Show Answer


Q191) In paddy field which of the following severs as an important biofertilizer Show Answer


Q192) Which of the following is false about the Mycorrhiza? Show Answer


Q193) Read the following statement having two blanks (A-B).
"A drug used for (A) patients is obtained from a species of the organisms (B)".
The one correct option for the two blanks is Show Answer


Q194) The pathogen Microsporum responsible for ringworm disease in humans belongs to the same Kingdom of organisms as that of Show Answer


Q195) In gobar gas, the maximum amount is that of Show Answer


Q196) Consider the following four statements (a-d) and select the option which includes all the correct ones only.
A. Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
B. Body weight-wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day.
C. Common button mushrooms are a very rich source of vitamin C.
D. A rice variety has been developed which is very rich in calcium. Show Answer


Q197) The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorized as Show Answer


Q198) Monascus purpureus is a yeast used commercially in the production of Show Answer


Q199) A patient brought to a hospital with myocardial infarction is normally immediately given Show Answer


Q200) Which one of the following microbes forms symbiotic association with plants and helps them n their nutrition Show Answer


Q201) Which one of the following single organism or the pair of organisms is correctly assigned of its or their named taxonomic group Show Answer


Q202) Which one of the following is an example of carrying out biological control of pests/diseases using microbes? Show Answer


Q203) During sewage treatment, biogases are produced which include Show Answer


Q204) Which one of the following statement is not true. Show Answer


Q205) What gases are produced in anaerobic sludge digesters Show Answer


Q206) Identify the set which has all organisms used in biological control of pests Show Answer


Q207) During waste water treatment, trickling filter is used for Show Answer


Q208) Biogas can be good substitute for Show Answer


Q209) Which of the following is wrongly matched in the given table? Show Answer


Q210) Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from Show Answer


Q211) Which one of the following micro-organisms is used as biofertilizer? Show Answer


Q212) Jojoba contains Show Answer


Q213) Castor oil is yielding from which of the following? Show Answer


Q214) A hybrid where the cytoplasm of two parent cells are fused by retaining only one parental nucleus is called Show Answer


Q215) Which one of the following is being utilized as a source of biodiesel in the Indian countryside? Show Answer


Q216) Powdery mildew of wheat is caused by species of Show Answer


Q217) Toddy is made by …A… of sap from palm tree by …B… . Here A and B refers to Show Answer


Q218) Which of the following belongs to free living nitrogen fixing bacteria?
I. Rhizobium
II . Azospirillum
III. Azotobacter
Choose the correct option Show Answer


Q219) Which one of the following is biofuel? Show Answer


Q220) Quinine used for treatment of malarial fever is extracted from Show Answer


Q221) Clove oil is obtained from Show Answer


Q222) Which role is played by Lactobacillus in our stomach? Show Answer


Q223) Which one of the following is a systematic insecticide? Show Answer


Q224) Choose the minor carp from the following Show Answer


Q225) ‘Himgiri’ developed by hybridization and selection for disease resistance against rust pathogens is a
variety of Show Answer


Q226) The pesticide most persistent in the soil is Show Answer


Q227) Besides dung, the weed that can be used in biogas production is Show Answer


Q228) Which one of the following is a petroleum plant? Show Answer


Q229) An organism used as biofertiliser for raising any legume crop is Show Answer


Q230) Rice bran oil is used as an Show Answer


Q231) Yeast have been used for the commercial production of
I. ethanol II. bread III. cheese
Choose the correct option Show Answer


Q232) The plant, which is used for studying hybrid vigour or heterosis is Show Answer


Q233) Sewage contains large amounts of …A… and …B… . Here A and B refers to Show Answer


Q234) Which of the following is a wrong matching of a microbe and its industrial product? Show Answer


Q235) Removal of anthers of some flowers during plant breeding is Show Answer


Q236) The plant of Triticum aestivum is Show Answer


Q237) Physical removal of large and small stable solid particles from the sewage through filtration and
sedimentation is called Show Answer


Q238) Cocaine alkaloid is obtained from Show Answer


Q239) First man-made cereal (i.e., triticale) is Show Answer


Q240) Organic farming includes
I. use of biofertilisers and biopesticides
II. crop rotation
III. locally developed pest resistant varieties
Choose the correct option Show Answer


Q241) Which of the following plant yields oil and fibre both? Show Answer


Q242) Trichoderma species, free living fungi, are present in root ecosystems are potentially useful as Show Answer


Q243) Which of the following plants are used as green manure in crop, fields and in sandy soils? Show Answer


Q244) Mule is a product of Show Answer


Q245) The pioneer country in the production of fuel-alcohol is Show Answer


Q246) The disease in poultry, which reduces immunity and spreads through contaminated food is Show Answer


Q247) Potato is a native of Show Answer


Q248) Which stage of silkworm secretes silk? Show Answer


Q249) Morphine, which is used as an analgesic is obtained from Show Answer


Q250) By which of the following methods, new and better varieties of plants can be formed? Show Answer


Q251) Methanogens are found in
I. organic acid
II. rumen of cattle
III. butanal
IV. anaerobic sludge
Choose the correct option Show Answer


Q252) LSD is obtained from Show Answer


Q253) Which of the following food items are produced through fermentation by the microorganisms?
I. Idli
II. Dosa
III. Toddy
IV. Cheese
Choose the correct option Show Answer


Q254) Roquefort cheese is formed by ripening with the fungi for a particular Show Answer


Q255) A drug used for …A… patients is obtained from a species of the organism ….B…
Choose the correct option for A and B Show Answer


Q256) Which one of the following is correct? Show Answer


Q257) In honey, the percentage of maltose and other sugar is Show Answer


Q258) Yeast is used in the production of Show Answer


Q259) Most of the petrocrops belong to family Show Answer


Q260) Which of the following has been covered under the broad patent category? Show Answer


Q261) Consider the following statement
I. Biochemical Oxygen Demand (BOD) represents the amount of dissolved oxygen that would be consumed
if all the organic matter in 1 L of water were oxidized by microorganism
II. Low value of BOD means the water is either normal or less polluted by organic matter
III. High value of BOD means the water in highly polluted by organic matter
Which of statement given above are correct? Show Answer


Q262) Which of the following is exhaustible but limited source of energy? Show Answer


Q263) Gossypium hirsutum is Show Answer


Q264) The natural method of pest and pathogen control involving use of viruses, bacteria and other insects is
called Show Answer


Q265) The function of penicillin as an antibiotic was established by Show Answer


Q266) Big holes in Swiss cheese are made by Show Answer


Q267) …A… is a methane rich fuel gas produced by …B… breakdown with the help of …C… bacteria. Here A, B and
C refers to Show Answer


Q268) The medicinal plants is Show Answer


Q269) Which is produced during anaerobic fermentation of agricultural wastes? Show Answer


Q270) Insecticide obtained from neem plant is Show Answer


Q271) In poultry birds, nasal and eye discharges with foul smell, acute respiratory problem and inflamed and
swollen eyes are the symptoms of Show Answer


Q272) Isinglass, a type of byproduct of fish industry is principally used for Show Answer


Q273) Which of the following serve as biofertiliser in paddy fields? Show Answer


Q274) Which one of these microbes is used in the commercial production of butyric acid? Show Answer


Q275) Primary treatment is the Show Answer


Q276) Benefits of mycorrhizae are
I. resistance to root borne pathogen
II. tolerance to salinity and pathogen
III. overall increase in the plant growth and development
Choose the correct option Show Answer


Q277) Biogas is a mixture of inflammable gases like Show Answer


Q278) Biogas production from waste biomass with the help of methanogenic bacteria is Show Answer


Q279) In silk fibre, the central core is made up of Show Answer


Q280) The part of flower of Crocus that yields saffron is Show Answer


Q281) Which is the major crop in Asia? Show Answer


Q282) Which method of plant breeding resulted in the production of ‘Hessian fly resistant’ wheat variety? Show Answer


Q283) The raw material obtained, from which one of the following plants, and is used in paper making? Show Answer


Q284) Which of the following fibres is not a plant product? Show Answer


Q285) The most important of the symbiotic nitrogen fixing bacteria, which forms nodules on the roots of legume
plants is Show Answer


Q286) Read the following statement having two blanks (A and B)
A drug used for …A… patients is obtained from a species of the organism ….B… . It helps in clearing blood
clots inside the blood vessels.
The one correct option for the two blanks are Show Answer


Q287) Study the following related to uses of plants and identify the correct match for sorghum and cotton
respectively.
I. Blood purification and organic fertilizer.
II. Animal feed and paper industry.
III. Vitamin-B and cosmetics.
IV. Explosives and organic fertilizer. Show Answer


Q288) Consider the following statements about methanogens bacteria
I. Methanogen bacteria are commonly found in the anaerobic sludge formed during sewage treatment
II. These bacteria are also occur in rumen of the cattle where they act upon cellulosic material to
breakdown cellulose
III. They play a very important role in the nutrition of cattle by digesting cellulosic material
Which of the statement given above are correct? Show Answer


Q289) Indian rose wood tree is a common name of Show Answer


Q290) Microorganisms or microbes are found in Show Answer


Q291) Emasculation is concerned with Show Answer


Q292) From which part of coconut coir is obtained? Show Answer


Q293) Microorganism such as Lactobacillus and others are commonly called Show Answer


Q294) Which of the following crops have been brought to India from New world? Show Answer


Q295) Which one of the following types of silk is being produced extensively in South East Asia? Show Answer


Q296) Aleurone grains are rich in Show Answer


Q297) Most recent insecticides in India are Show Answer


Q298) Breeding of crops with high levels of minerals, vitamins and proteins is called Show Answer


Q299) The microorganism used in production of biogas is Show Answer


Q300) Chicks of the first week in the brooder hover are usually susceptible to which one of the following disease? Show Answer


Q301) The most common fungal partner of mycorrhiza belongs to genus Show Answer


Q302) Disadvantages of chemical agents are
I. chemicals are toxic and harmful to human beings and animals
II. chemical pollute the environment and plants
III. weedicides used to remove weeds also pollute the soil
Choose the correct option Show Answer


Q303) Bacillus thuringiensis (Bt) strains have been used for designing novel Show Answer


Q304) Brewer’s yeast is Show Answer


Q305) The free-living fungus Trichoderma can be used for Show Answer


Q306) Father of green revolution in India is Show Answer


Q307) Which of the following can be controlled by using biopesticides? Show Answer


Q308) Microbes are used in
I. primary treatment of sewage
II. secondary treatment of sewage
III. anaerobic sludge digesters
IV. production of biogas
Choose the correct option Show Answer


Q309) Desired improved varieties of economically useful crops are raised by Show Answer


Q310) Neem tree has acquired industrial importance as a source of Show Answer


Q311) Which one of the following is not a nitrogen-fixing organism? Show Answer


Q312) Which of the following shows maximum genetic diversity in India? Show Answer


Q313) Cloves are obtained from Show Answer


Q314) Which of the following herbicides and defoliant were used by the US military in its herbicidal warfare
programme during the Vietnam war? Show Answer


Q315) In crop improvement programme, haploids are of great importance because they Show Answer


Q316) Pollution from animal excreta and organic waste from kitchen can be most profitably minimised by Show Answer


Q317) Cellulose fibre is obtained from Gossypium Show Answer


Q318) Biogas production is carried out by Show Answer


Q319) Methanogens, growing anaerobically on cellulosic material, produce Show Answer


Q320) Which one is a neem product used as insect repellent? Show Answer


Q321) Triticale, the first man-made cereal crop, has been obtained by crossing wheat with Show Answer


Q322) Which one of the following is being tried in India as a bio-fuel substitute for fossil fuels? Show Answer


Q323) Mycorrhiza does not help the host plant in Show Answer


Q324) Which of the following is a disease resistant, high yielding breed of poultry developed in Karnataka? Show Answer


Q325) Which industrial products are synthesized from microbes?
I. Antibiotics II. Fermented beverages
III. Bioactive molecules IV. Enzyme
Choose the correct option Show Answer


Q326) A collection of plants and seeds having diverse alleles of all the genes of a crop is called Show Answer


Q327) Percentage composition of fibroin and sericin in silk is Show Answer


Q328) Simondesia chinensis is commonly known as Show Answer


Q329) The quickest method of plant breeding is Show Answer


Q330) Chicken pox, small pox, etc., can be cure by Show Answer


Q331) Nitrifying bacteria Show Answer


Q332) Consider the following statements
I. Ladybirds and dragonflies are used to get rid of aphids and mosquitoes
II. The bacteria Bacillus thuringiensis (Bt) are used to control butterfly
III. Trichoderma sp. free living fungi, are present in root ecosystems where they act against several plant
pathogens
IV. Rhizobium is a symbiotic bacterium that lives in the stem of legumes
Which of the statements given above are correct? Show Answer


Q333) Cultivation of Bt cotton has been much in the news. The prefix Bt means Show Answer


Q334) Which of the following cyanobacteria can fix atmospheric nitrogen?
I. Vilvox II. Oscillatoria
III. Nostoc IV. Anabaena
Choose the correct option Show Answer


Q335) From which one of the following plants, the insecticide pyrethrum is prepared? Show Answer


Q336) Bacterial fertilizer is Show Answer


Q337) Which of the following organisms is used in the production of beverages like wine, beer, whisky brandy or
rum? Show Answer


Q338) Recently Govt. of India has allowed mixing of alcohol in petrol. What is the amount of alcohol permitted for
mixing in petrol? Show Answer


Q339) The chemical substances produced by some microbes, which can kill or retard the growth of other
microbes are called Show Answer


Q340) Which of the following is/are the approache(s) for biological farming?
I. Familiarity with various life-forms inhabiting the field
II. Gain knowledge about the life cycles, patterns of feeding and habitat of predators and pests
Choose the correct option Show Answer


Q341) Which is a useful product of epidermal origin? Show Answer


Q342) Toddy is traditional drink of Show Answer


Q343) Process of biogas production is an Show Answer


Q344) Cork is obtained from Show Answer


Q345) Nosema bombycis, which causes pebrine in silk worms is a Show Answer


Q346) In September 2001, which of the following was used as a bioweapon agent in America? Show Answer


Q347) Gambusia fish is Show Answer


Q348) Biogas produced by fermentation of manure, sewage, cattle dung, etc., predominantly comprises Show Answer


Q349) Chicory powder, which is mixed with coffee powder is obtained from Show Answer


Q350) ‘Kattha’ is obtained from the heart wood of Show Answer


Q351) Trichoderma sp. free living fungi has proved a useful microorganism of Show Answer


Q352) Biogas is pathogen free because Show Answer


Q353) What name has been assigned to the genus produced by a cross between cabbage and radish? Show Answer


Q354) Isinglass is a product obtained from air bladder of Show Answer


Q355) The water soluble protein associated with silk thread is Show Answer


Q356) Most nutritious among the following is Show Answer


Q357) Which gas is released during the process of fermentation that gives the puffy appearance to dough for
making bread Show Answer


Q358) Real product of apiculture is Show Answer


Q359) Integrated Pest Management (IPM) discourages the excessive use of Show Answer


Q360) A pseudocereal is Show Answer


Q361) An organism used as a biofertilizer for raising soyabean crop production is Show Answer


Q362) In maize, hybrid vigour is exploited by Show Answer


Q363) Roquefort cheese is formed by ripening with the fungi Show Answer


Q364) A straight fertilizer is the one, which is Show Answer


Q365) Which of the following microbe convert milk into curd? Show Answer


Q366) Consider the following statements about organic farming
I. Organic farming promotes the use of crop rotations and cover crops and encourages balanced
host/predator relationships
II. Integrated pest and weed management and soil conservation systems are valuable tools on an organic
farm
II. Organic farming protects the environment, minimize soil degradation and erosion and decrease
pollution
Which of the statements given above are correct? Show Answer


Q367) Saccharomyces cerevisiae is used for commercial production of Show Answer


Q368) In the sewage treatment bacterial flocs are allowed to sediment in a settling-tank. This sediment is called
as Show Answer


Q369) Genetic diversity in agricultural crops is threatened by Show Answer


Q370) Which one of the following is used as biological insecticide? Show Answer


Q371) During the primary treatment of sewage, solid particles that settle down are called Show Answer


Q372) Recently discovered anti-cancer drug is obtained from Show Answer


Q373) Triticum aestivum, the common bread wheat is Show Answer


Q374) In plant A, 2n = 12 and in plant B, 2n = 16. Then the ploidy number of cross breeding plant is Show Answer


Q375) BOD of waste water is estimated by measuring the amount of Show Answer


Q376) Producer gas differs from biogas in having Show Answer


Q377) Bacillus thuringiensis is used as Show Answer


Q378) The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers to purchase fresh hybrid seed
every year because Show Answer


Q379) The residue left after methane production from cattle dung is Show Answer


Q380) Morphine obtained from opium is Show Answer


Q381) Bacillus thuringiensis is used to control Show Answer


Q382) Which of the following statements regarding baculoviruses as bio-control agents is/are correct?
I. Baculoviruses are pathogens that attack insects and other arthropods
II. Most of these biocontrol agents belong to the genus Nucleopolyhedro virus
III. They do not harm plants mammals, birds, fish and other non-target insects
IV. Baculoviruses are helpful in Integrated Pest Management (IPM) programme, in which beneficial insects
are conserved
Choose the correct option Show Answer


Q383) The timber yielding plant Shorea robusta belongs to the which family? Show Answer


Q384) Opium is obtained from which the part of Papaver somniferum? Show Answer


Q385) Which one of the following genus forms symbiotic association with plants and helps them in their
nutrition? Show Answer


Q386) By anaerobic process, the cow dung is used to produce Show Answer


Q387) India’s wheat yield revolution in the 1960s was possible primarily due to Show Answer


Q388) Introduced plants in new localities must show adaptations called Show Answer


Q389) The world’s highly prized wool yielding ‘Pashmina’ breed is Show Answer


Q390) Which one of the following pesticides is banned now-a-days? Show Answer


Q391) The technology of biogas production from cow dung was developed in India largly by the efforts of Show Answer


Q392) Which of the following is wrongly matched? Show Answer


Q393) Rauwolffia is obtained from which part of the plant? Show Answer


Q394) Which one of the following is the American poultry breed? Show Answer


Q395) …A… released by LAB during growth coagulate and partially digest …B… . Here A and B refers to Show Answer


Q396) Which of the following is correct?
I. Wine and beer are produced without distillation of fermented broth
II. Whisky, brandy and rum are produced by distillation of the fermented broth
III. Wine and beer are produced by distillation of the fermented broth
IV. Whisky, brandy and rum are produced without distillation of the fermented broth
Choose the correct option Show Answer


Q397) Quarantine regulation is meant for Show Answer


Q398) Which one of the following is not used in organic farming? Show Answer


Q399) Which type of endosperm will be formed on hybridization of diploid female plant and tetraploid male
plant? Show Answer


Q400) Protoplasts of two different species are used in Show Answer


Q401) An important drug is obtained from the bark of Show Answer


Q402) Morphine is obtained from Show Answer


Q403) Which type of honey bees are useful for apiary industries in India? Show Answer


Q404) The term heterosis was first coined by Show Answer


Q405) A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into
the starting of the process is calledCyclic treatment Show Answer


Q406) Consider the following statements
I. Yeast used in making bread and beverages is a prokaryotic fungus
II. Streptokinase is produced by Streptococcus and modified by genetic engineering is used as a clot
buster
III. Lipases are added in detergent for removing only stains from laundry
IV. Pectinases are used in clearing fruit juices
Which of the statement given above are correct? Show Answer


Q407) The main sources of biofertilisers are Show Answer


Q408) Cotyledons and testa are edible parts of Show Answer


Q409) Cotton fibre is basically a type of Show Answer


Q410) Name the group of microbes used in biogas production Show Answer


Q411) Root cells of wheat has 2n = 42 chromosomes. Which one of the following is the basic chromosome
number of wheat? Show Answer


Q412) An undistillled alcoholic beverage produced from grain-mesh fermentation is Show Answer


Q413) Cytosporin-A an immunosuppressive drug is produced by the fungus Show Answer


Q414) Choose the cat fish from the following Show Answer


Q415) ‘Jaya’ and ‘Ratna’ developed for green revolution in India are the varieties of Show Answer


Q416) Shakti, Rattan and Protina are three important lysine rich varieties of Show Answer


Q417) Gobar gas generation technology was developed by the collaboration of …A… and …B… . Here A and B
refers to Show Answer


Q418) Select the correct statement from the once given below Show Answer


Q419) Pyrethrin is extracted from Show Answer


Q420) Cod and shark liver oil is a source of Show Answer


Q421) Agricultural chemicals include Show Answer


Q422) Leaves of which plant can sharpen the memory? Show Answer


Q423) Which of the following plants is used as biofertilizer? Show Answer


Q424) The scientific name of zebu is Show Answer


Q425) Reserpine is obtained from Show Answer


Q426) The microscopic proteinaceous infectious agents are Show Answer


Q427) Biochemical Oxygen Demand (BOD) in a river water Show Answer


Q428) Autopolyploids (numeric or quantitative polyploids or intraspecific polyploids) like ferns, garden plants,
gram, maize, rice, banana, grapes, apple, etc, show Show Answer


Q429) For cryopreservation, plant materials are frozen at Show Answer


Q430) Activated sludge have the ability to settle quickly so that it can Show Answer


Q431) Which of the following are the part or example of symbiotic mutualistic association?
I. Yeast
II. Rhizobium
III. Mycorrhiza
IV. Oscillatoria Show Answer


Q432) Leucaena leucocephala is Show Answer


Q433) High content of lysine is present in Show Answer


Q434) Opium is obtained from Show Answer


Q435) The part of castor seed that yields oil is Show Answer


Q436) Which one of the following is a viral disease of poultry? Show Answer


Q437) Which one of the following is a disease of poultry? Show Answer


Q438) Baculoviruses do not show harmful effect on
I. plants II. Mammals
III. bird IV. Non-target insects
Choose the correct option Show Answer


Q439) Atropa belladonna yields medicine used for Show Answer


Q440) The terminator gene technology causes Show Answer


Q441) What will your conclude, when a cow is crossed to a bull and the female progeny is yielding more milk
than its mother? Show Answer


Q442) CFCL is situated at Show Answer


Q443) Insecticides usually act upon Show Answer


Q444) Which of the following is used as biofertiliser?
I. Cyanobacteria
II. Yeast
III. Symbiotic bacteria
IV. Free living bacteria
Choose the correct option Show Answer


Q445) A commonly used mastigator called ‘supari’ is obtained from the plant Show Answer


Q446) Which of the following is not used as a biopesticide? Show Answer


Q447) Which of the following is used as ‘clotbuster’. For removing clots from blood vessels of patient who have
undergone myocardial infartion Show Answer


Q448) Which of the following is an endogenic species of earthworm? Show Answer


Q449) Which bacteria are utilized in gobar gas plant? Show Answer


Q450) Energy cropping is Show Answer


Q451) What would happen if oxygen availability to activated sludge flocs is reduced? Show Answer


Q452) Asafoetida is obtained from Show Answer


Q453) The plant most commonly used as green manure is Show Answer


Q454) What happened when we inoculate Rhizobium in the wheat field? Show Answer


Q455) In the biological treatment of sewage the masses of bacteria held together by fungal filament to form mesh
like structures called as Show Answer


Q456) Toddy is
I. a traditional drink of Southern India
II. made by fermentation of sap from palm trees by bacteria
Which of the statements given above about toddy is/are correct? Show Answer


Q457) The symbiotic association of fungi with the roots of higher plants is called Show Answer


Q458) Sunhemp is obtained from Show Answer


Q459) A common biocontrol agent for the control of plant diseases Show Answer


Q460) Three crops that contribute maximum to global food grain production are Show Answer


Q461) Pomato is Show Answer


Q462) The large holes in swiss cheese are due to production of a large amount of …A… by a bacterium …B… . Here
A and B refers to Show Answer


Q463) The primary treatment of waste water involves the removal of Show Answer


Q464) Green manures are prepared from Show Answer


Q465) Crossing of unrelated pure breeding animals of different traits within the same breed is called Show Answer


Q466) Heroin is obtained from plant of family Show Answer


Q467) Disease resistance crop is obtained by Show Answer


Q468) Mating between two individuals differing in genotypes to produce genetic variation is called Show Answer


Q469) Carbamates pesticides act by combining with acetylcholinesterase enzyme. Which one of the following is a
carbamate? Show Answer


Q470) The nutritive medium for growing bacteria and many fungi in the laboratory is called Show Answer


Q471) Which of the following statement is correct? Show Answer


Q472) Mycorrhiza promotes plant growth by Show Answer


Q473) Rotenone is a Show Answer


Q474) The starter or inoculum is added to the fresh milk in order to convert milk into curd, the term starter or
inoculum here refers to Show Answer


Q475) ‘Nagkesar’ is obtained from the flowers of Show Answer


Q476) The larvicidial fish used in biocontrol of mosquitoes,is Show Answer


Q477) Which one of the following plants found in India is an escape from the quarantine? Show Answer


Q478) Green potatoes are toxic due to Show Answer


Q479) Baker’s yeast is Show Answer


Q480) Which one is not produced by aquaculture? Show Answer


Q481) Intoxicant caffeine is found in Show Answer


Q482) The purpose of biological treatment of waste water is to Show Answer


Q483) International Rice Research Institute (IRRI) is located at Show Answer


Q484) Regulation to restrict the movement of diseased plant material from one place to another are called Show Answer


Q485) Which of the following is common to Azospirillum, Anabaena, Nostoc and Oscillatoria Show Answer


Q486) Plants having similar genotypes produced by plant breeding are called Show Answer


Q487) Quinine is obtained from Show Answer


Q488) Which of the following plan has been initiated by the Ministry of Environment and Forests to protect
rivers from water pollution? Show Answer


Q489) In rice fields biological nitrogen fixation is chiefly brought by Show Answer


Q490) Which of the following is correctly matched? Show Answer


Q491) Sewage or municipal waste should not be directly passed into rivers, streams and other water bodies
because
I. it contains human excreta and other organic waste
II. it contains a number of pathogenic microbes
Which of the statement given above is/are correct? Show Answer


Q492) Turpentine oil is obtained from Show Answer


Q493) Curd is formed by adding a small amount of curd to milk, which acts as a Show Answer


Q494) Statins used as blood cholesterol lowering agents are extracted from Show Answer


Q495) Triticum vulgare has been found to be presently evolved as Show Answer


Q496) A good example for organic fertilizer, which improves phosphorus uptake, is Show Answer


Q497) Cricket bat is made from the wood of Show Answer


Q498) Consider the following statements about Bt
I. The bacteria Bacillus thuringiensis (Bt) are used to control butterfly catterpillers
II. Fresh spores of Bt are mixed with water and sprayed on seeds such as brassicas and fruit trees
III. Insect larvae, after eating these are killed by the toxin released in their gut
IV. Bt toxin genes have been introduced into plants to provide resistance to pests
Which of the statements given above are correct? Show Answer


Q499) Hybrid vigour is mostly due to Show Answer


Q500) Protein in silk thread is Show Answer


Q501) Which of the following is a dual purpose breed? Show Answer


Q502) Which is correctly matched? Show Answer


Q503) In poultry, first deworming is usually done around this age Show Answer


Q504) ‘Heterosis’ is related to Show Answer


Q505) Which hexaploid wheat is used to make bread? Show Answer


Q506) Somatic hybridization is a technique of Show Answer


Q507) Allethrin is a commonly used Show Answer


Q508) Which one of these diseases in animals is caused by Babesia bigemina? Show Answer


Q509) Which one of the following antibiotic was extensively used to treat American soldiers wounded in World
War-II? Show Answer


Q510) Blue-green algae are mainly used as biofertilisers in the field of which crop? Show Answer


Q511) A water fern, which is used as a green manure in rice fields is Show Answer


Q512) A man made allopolyploid cereal crop is Show Answer


Q513) IPM (Integrated pest Management) involves Show Answer


Q514) The part of cotton producing pure cellulose is Show Answer


Q515) Mosascus purpureus is a yeast (fungus) commercially used in the production of Show Answer


Q516) Study the following pathogens .
I. Yersinia pestis
II. Borrelia sp
III.Odium albicans
IV. Microbacterium leprae
V. Haemophilus gallinarium
Which of the above cause damage to poultry industry? Show Answer


Q517) During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left
undegraded? Show Answer


Q518) The source of intoxicating beverage called ‘Saky’ is Show Answer


Q519) Which of the following aquatic weeds is not used in production of biogas? Show Answer


Q520) In which method electric current is created for capturing fishes? Show Answer


Q521) Which of following plant species you would select for the production of bioethanol? Show Answer


Q522) Stramonium is a drug obtained from the plant species of Show Answer


Q523) Silk is obtained from Show Answer


Q524) Caffeine, cocaine and amphetamine are Show Answer


Q525) Which one of the fungi is used for production of citric acid? Show Answer


Q526) Methanogens, particularly Methanobacterium grow anaerobically on cellulosic material and produce
I. methane
II. carbon dioxide
III. oxygen
IV. ethane
Choose the correct option Show Answer


Q527) Consider the following statements about, secondary sewage treatment
I. In secondary treatment useful aerobic microbes grow rapidly and form flocs. Flocs are masses of
bacteria associated with fungal filaments to form mesh-like structures.
II. The growing microbes consume organic matter and thus reduce the biochemical oxygen demand.
When BOD of sewage has reduced, the effluent is passed into settling tank.
III. In settling tank, the bacterial flocs settle and the sediment is called activated sludge.
IV. A small part of the sludge is used as an inoculum in the aeration tank and the remaining part is passed
into large tanks called anaerobic sludge digesters.
V. In the digesters, heterotrophic microbes anaerobically digest bacteria and fungi in sludge producing
mixture of gases such as, carbon dioxide nitrogen and carbon monoxide which form the biogas
Which of the statements given above are correct? Show Answer


Q528) Gobar gas contains mainly Show Answer


Q529) One of the major difficulties in the biological control of insect pest is that the Show Answer


Q530) Study the following flow chart that shows curd formation from milk and select the correct option for A and
B
Milk is incubated with curd

LAB shows growth in milk

Production of …..A…..

Coagulation and digestion of milk protein

Improved nutritional quality by increased ….B…. Show Answer


Q531) Pencils are prepared from the wood of Show Answer


Q532) Rauwolffia serpentina is used in Show Answer


Q533) Agriculture by using only biofertilisers is called Show Answer


Q534) Penicillin is the first antibiotic. It was discovered by Show Answer


Q535) In paddy fields biological nitrogen fixation is chiefly brought by Show Answer


Q536) Superiority of hybrid over parents is Show Answer


Q537) Which of the following insecticides is obtained from the roots of Derris elleptica ? Show Answer


Q538) Which of the following bacteria is present in the rumen of cattle? Show Answer


Q539) Which is a bioinsecticide? Show Answer


Q540) Wonder wheat is new wheat variety developed by Show Answer


Q541) Which of the following in an opioid drug? Show Answer


Q542) Select the correct statement from the following Show Answer


Q543) Jute fibres are obtained from the Show Answer


Q544) Para rubber is obtained from the latex of Show Answer


Q545) Consider the following statements
I. Antibiotics are chemical substances produced by some microorganisms which can kill or retard the
growth of other disease-causing microorganisms
II. Penicillin is the first antibiotic discovered by Alexander Fleming (1928), while working o bacterium Staphylococcus aureus
III. The function of penicillin as an antibiotic was established by Ernst chain and Howard Florey
Which of the statement given above are correct? Show Answer


Q546) Swiss cheese is formed by the bacterium Show Answer


Q547) Azolla is used as a biofertilizer because it Show Answer


Q548) Methanogens do not produce Show Answer


Q549) Statement 1: Use of fertilizers greatly enhances crop productivity.
Statement 2: Irrigation is very important in increasing crop productivity Show Answer


Q550) compare the statements A with B.
Statement 1: Ranikhet disease is the disease of poultry.
Statement 2: It is caused by a virus Show Answer


Q551) Statement 1: Clonal selection is a method of breeding in sugarcane
Statement 2: Sugarcane is propagated through suckers Show Answer


Q552) Statement 1: Leguminous plants are best preferred in rotation of crops
Statement 2: They have root nodules, which have nitrogen fixing bacteria Clostridium Show Answer


Q553) Statement 1: Organochlorine pesticides are organic compounds that have been chlorinated.
Statement 2: Fenitrothion is one of the organochlorine pesticides Show Answer


Q554) Statement 1: Citrullus vulgaris is produced from a cross between 4n male and 2n female plants.
Statement 2: These triploid sterile plants do not bear seeds Show Answer


Q555) Statement 1: Chemical pesticides are more hazardous as compared to biopesticides
Statement 2: Chemical pesticides are mostly non-specific, expensive, hazardous and pollute the
atmosphere Show Answer


Q556) Statement 1: Biogas is used as fuel for cooking and lighting
Statement 2: It is considered as ecofriendly and pollution free source of energy Show Answer


Q557) Statement 1: The disadvantages of synthetic pesticides can be overcome by the use of natural or
biopesticides
Statement 2: Biopesticides are harmless pesticide which are used to control weeds and pest without
causing any damage Show Answer


Q558) Statement 1: Fish meal is a rich source of protein for cattle and poultry.
Statement 2: Fish meal is produced from non-edible parts of fishes like fins, tail. Show Answer


Q559) Statement 1: Besides curdling of milk, LAB also improve its nutritional quality by increasing vitamin-
B12
Statement 2: LAB, when present in human stomach, check disease causing microbes Show Answer