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NEET • BIOLOGY • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION
Strategies for enhancement in food production practice · Medium
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1
Medium
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Analyzing
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Assertion : Man will flourish in all fronts if pests
are destroyed.
Reason : The elimination of pests would
increase the yield in agricultural production.
are destroyed.
Reason : The elimination of pests would
increase the yield in agricultural production.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Reason is the correct explanation of Assertion
Option A (If both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because eliminating pests increases agricultural yield, which allows humans to flourish.
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Remembering
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Cocaine alkaloid is obtained from
View answer and explanation
Correct option: A
Erythroxylon coca
Option A (Erythroxylon coca) is correct because cocaine alkaloid is extracted from the plant Erythroxylon coca.
3
Medium
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Remembering
+4 | -1
Variety of Brassica resistant to white rust is
View answer and explanation
Correct option: C
Pusa swarnim
Option C (Pusa swarnim) is correct because Pusa Swarnim is a variety of Brassica (Indian mustard) that is resistant to white rust disease.
4
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Remembering
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Pusa Shubhra is bred by hybridisation and selection for resistance to black rot and curl blight black rot is a variety of
View answer and explanation
Correct option: D
Cauliflower
Option D (Cauliflower) is correct because Pusa Shubhra is a variety of cauliflower bred for resistance to black rot and curl blight black rot.
5
Medium
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Remembering
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Which one of the following is biofuel?
View answer and explanation
Correct option: A
Wood
Option A (Wood) is correct because biofuel is defined as fuel derived from biomass, and wood is a form of biomass.
6
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Remembering
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Agriculture contributes about A of India’s GDP and gives employment to nearly B of the population. Select the option which correctly fills A and B.
View answer and explanation
Correct option: A
A-33%,B-62%
Option A (A-33%, B-62%) is correct because agriculture contributes approximately 33% to India's GDP and employs around 62% of the population.
7
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Remembering
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Which of the following enzymes are used in somatic hybridisation of two cells of different plants?
View answer and explanation
Correct option: B
Cellulase and pectinase
Option B (Cellulase and pectinase) is correct because these enzymes are used to digest the cell walls of plant cells during somatic hybridization.
8
Medium
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Understanding
+4 | -1
In cotton, smooth leaf and absence of nector repel
View answer and explanation
Correct option: B
Bollworms
Option D (Jassids) is correct because smooth leaves and the absence of nectar are known to repel jassids in cotton plants.
9
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Understanding
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In maize, hybrid vigour is exploited by
View answer and explanation
Correct option: D
Inducting mutations
Option B (Crossing of two inbred parental lines) is incorrect. The correct answer is Inducting mutations because hybrid vigor in maize is exploited by inducing mutations.
10
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Remembering
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The plant, which is used for studying hybrid vigour or heterosis is
View answer and explanation
Correct option: A
Maize
Option A (Maize) is correct because maize is commonly used to study hybrid vigor or heterosis due to its distinct traits and ease of crossing.
11
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Understanding
+4 | -1
Single cell protein can be useful in all, except
View answer and explanation
Correct option: C
Preventing shift from meat to grain as diet by human beings
Option C (Preventing shift from meat to grain as diet by human beings) is correct because single-cell protein is useful for reducing pollution, decreasing pressure on agriculture, and being acceptable as food, but it cannot prevent dietary shifts.
12
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Application
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Pollen grains of a plant, whose , are cultured to get callus by tissue culture method. What would be the number of chromosomes in the cells of the callus?
View answer and explanation
Correct option: C
14
Option C (14) is correct because pollen grains are haploid (n), so if 2n = 28, then n = 14.
13
Medium
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Analyzing
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Read the following statements and select the option which is true for them
Statement-1 Mushrooms are not considered as because mushrooms are multicellular.
Statement-2 Apical and axillary meristems are free of viruses due to high concentration of auxin and rapid cell division.
Statement-1 Mushrooms are not considered as because mushrooms are multicellular.
Statement-2 Apical and axillary meristems are free of viruses due to high concentration of auxin and rapid cell division.
View answer and explanation
Correct option: D
Only statement - 2 is correct
Option D (Only statement - 2 is correct) is correct because apical and axillary meristems are often virus-free, while mushrooms are considered SCP.
14
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Analyzing
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Assertion : The depth of sowing has an
important effect on some pathogens, notably
those which attack seedlings.
Reason : By delaying the emergences of seedlings,
deep sowing may help to increase the resistance
of a susceptible crop to a pathogen.
important effect on some pathogens, notably
those which attack seedlings.
Reason : By delaying the emergences of seedlings,
deep sowing may help to increase the resistance
of a susceptible crop to a pathogen.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Reason is the correct explanation of Assertion
Option A (If both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because deeper sowing delays seedling emergence, potentially increasing resistance to pathogens.
15
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Remembering
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Single cell proteins refers to
View answer and explanation
Correct option: B
Sources of mixed proteins extracted from pure or mixed culture of organisms or cells
Option B (Sources of mixed proteins extracted from pure or mixed culture of organisms or cells) is correct because single-cell protein refers to the protein extracted from cultures of microorganisms.
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16
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Application
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250 g of bacterium has been used to produce
View answer and explanation
Correct option: B
25 tonnes of proteins
Option B (25 tonnes of proteins) is correct because 250g of Methylophilus methylotrophus can produce approximately 25 tonnes of protein.
17
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Remembering
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Which of the following is a wheat variety rich in proteins and developed through biofortification?
View answer and explanation
Correct option: B
Atlas 66
Option B (Atlas 66) is correct because Atlas 66 is a wheat variety known for being rich in proteins and developed through biofortification.
18
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Understanding
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Autopolyploids (numeric or quantitative polyploids or intraspecific polyploids) like ferns, garden plants, gram, maize, rice, banana, grapes, apple, etc, show
View answer and explanation
Correct option: C
More yields and better adaptation
Option C (More yields and better adaptation) is correct because autopolyploids often exhibit increased yields and improved adaptation to various environmental conditions due to increased genetic material.
19
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Remembering
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For production of haploids, we culture
View answer and explanation
Correct option: B
Anther
Option B (Anther) is correct because anther culture, which involves culturing the male part of the flower, is used to produce haploid plants.
20
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Remembering
+4 | -1
Bee wax is a product of …….. Importance
View answer and explanation
Correct option: A
Industrial
Option A (Industrial) is correct because bee wax is used in various industrial applications, such as cosmetics, candles, and polishes.
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Remembering
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A group of animals which are related by descent and share many similarities are referred to as
View answer and explanation
Correct option: A
Breed
Option A (Breed) is correct because a breed is a group of animals related by descent and sharing similar characteristics, developed through selective breeding.
22
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Remembering
+4 | -1
Protoplasts of two different species are fused in
View answer and explanation
Correct option: B
Somatic hybridization
Option B (Somatic hybridization) is correct because somatic hybridization involves the fusion of protoplasts from two different species.
23
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Understanding
+4 | -1
The term ‘totipotency’ refers to
View answer and explanation
Correct option: B
Capability of somatic cells to produce complete organism
Option B (Capability of somatic cells to produce complete organism) is correct because totipotency is the ability of a single somatic cell to differentiate into all cell types and form a complete organism.
24
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Analyzing
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I. In spite of having more than 70% of the world live stock population, the contribution of India and china to the world farm produce is only 25%
II. The productivity per unit of cattle in these countries is very high
II. The productivity per unit of cattle in these countries is very high
View answer and explanation
Correct option: C
I is true and II is false
Option C (I is true and II is false) is correct because while India and China have a large livestock population, their productivity per animal is relatively low.
25
Medium
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Understanding
+4 | -1
Hybrid vigour is mostly due to
View answer and explanation
Correct option: C
Heterozygosity
Option C (Heterozygosity) is correct because hybrid vigor, or heterosis, is primarily due to the increased heterozygosity in the hybrid offspring, leading to superior traits.
26
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Remembering
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Microbes like Spirulina can be grown on material like
I. waste water from potato processing plants
II. straw
III. animal manure and sewage
IV. molasses
Choose the correct option
I. waste water from potato processing plants
II. straw
III. animal manure and sewage
IV. molasses
Choose the correct option
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because Spirulina can be grown on all the mentioned materials: waste water from potato processing plants, straw, animal manure and sewage, and molasses.
27
Medium
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Remembering
+4 | -1
Hairy leaves of many plants are associated with providing resistance from
View answer and explanation
Correct option: A
Insect pests
Option A (Insect pests) is correct because hairy leaves provide a physical barrier that deters many insect pests from feeding or laying eggs on the plant.
28
Medium
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Remembering
+4 | -1
Silk is obtained from
View answer and explanation
Correct option: A
Bombyx mori
Option A (Bombyx mori) is correct because silk is obtained from the silkworm Bombyx mori.
29
Medium
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Remembering
+4 | -1
Himgiri is a variety of
View answer and explanation
Correct option: C
Wheat
Option C (Wheat) is correct because Himgiri is a variety of wheat known for its disease resistance.
30
Medium
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Understanding
+4 | -1
Plants in comparison to animals are more rapidly manipulated by genetic engineering. Select out the most probable reason for this
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because totipotency, single-cell regeneration, and tissue culture techniques all contribute to the rapid manipulation of plants through genetic engineering.
Revision notes and key takeaways
Review STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
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