Food production has always been one of the most important aspects of modern society. More efficient ways of producing and storing food have been developed over the decades. Besides theoretical insights, it is crucial to learn practical applications. Hence our rendition of Enhancement of food production MCQs is designed to help students comprehend and recall essential concepts and questions that we deem are important.
Class 12 Biology Strategies for Enhancement in Food Production MCQs with Answer
Q1. The scientific process by which crop plants are enriched with certain desirable nutrients is called:
- Crop protection.
- Breeding.
- Bio-fortification.
- Bio-remediation.
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Ans: 3. Bio-fortification.
It is the most practical means to improve public health. In bio-fortification breeding of crops with higher levels of vitamins and
minerals or higher protein and healthier fats. In 2000, maize hybrids were developed that had twice the amount of amino acid lysine
and tryptophan (MALT). Atlas 66 (Wheat variety), having high protein content has been used as a donor for improving cultivated
wheat. Iron fortified rice variety contains over 5 times much Fe.
Q2. Which one of the following is a marine fish:
- Rohu.
- Hilsa.
- Catla.
- Common Carp.
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Ans: 2. Hilsa.
Freshwater edible fished: Rohu, Catla and Common carp. Marine edible fishes: Sardines, Hilsa, Mackerel and Pomfrets.
Q3. Find the incorrect statement:
- Pusa Sem-2 and 3 are flat bean crop varieties.
- In wheat, solid stem is resistant against sawfly.
- Himgiri is a variety of cauliflower.
- Pusa komal is a variety of cowpea.
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Ans: 3. Himgiri is a variety of cauliflower.
Q4. Lysine and tryptophan are:
- Proteins.
- Non-essential amino acids.
- Essential amino acids.
- Aromatic and no acids.
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Ans: 3. Essential amino acids.
Lysine and tryptophan are essential amino acids.
Q5. The chances of contacting bird flu from a properly cooked (above 100°C) chicken and egg are:
- Very high.
- High.
- Moderate.
- None.
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Ans: 4. None.
When chicken is properly cooked, it helps in destroying the virus of bird flu
Q6. Micro-propagation is:
- Propagation of microbes in vitro.
- Propagation of plants in vitro.
- Propagation of cells in vitro.
- Growing plants on smaller scale.
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Ans: 2. Propagation of plants in vitro.
Smaller scale can mean a small flower pot, so option ‘d’ is incorrect. Microbes and cells are small enough to be easily growth in vitro
and hence options a and c are incorrect.
Q7. Mark the odd one in the following groups.
- Red rot of sugarcane.
- Black rot of crucifer.
- Late blight of Potato.
- Brown rust of wheat.
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Ans: 2. Black rot of crucifer.
Q8. Which one of the following products of apiculture is used in cosmetics and polishes:
- Honey.
- Oil.
- Wax.
- Royal jelly.
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Ans: 3. Wax.
Wax is a product of apiculture used in cosmetics and polishes
Q9. In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus because:
- The dividing cells are virus resistant.
- Meristems have anti viral compounds.
- The cell division of meristems are faster than the rate of viral multiplication.
- Viruses cannot multiply within meristem cell (s)
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Ans: 3. The cell division of meristems are faster than the rate of viral multiplication.
Because of faster rate of multiplication; meristematic cells are not affected by virus.
Q10. Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed:
- Recombinant DNA technology.
- Transgenic mechanism.
- Mutation breeding.
- Gene therapy.
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Ans: 3. Mutation breeding.
Use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed as mutation breeding.
Mutations is induced artificially through use of chemicals or radiations like gamma radiations. In mung bean, resistance to yellow
mosaic virus and powdery mildew were induced by mutations.
Q11. The agriculture sector of India employs:
- 60 per cent of the population.
- 70 per cent of the population.
- 30 per cent of the population.
- 62 per cent of the population.
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Ans: 4. 62 per cent of the population.
The agriculture sector of India employs about 60 per cent of the population.
Q12. Which culture is suitable for the production of virus free plants?
- Anther culture.
- Suspension culture.
- Meristem culture.
- Callus culture.
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Ans: 3. Meristem culture.
Q13. Which is the root of breeding programmes?
- Totipotency.
- Genetic variability.
- Hybrid vigour.
- Pure lines.
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Ans: 2. Genetic variability.
Q14. The part of the plant used for somatic hybridisation is:
- Protoplast.
- Genome.
- Meristem.
- Nucleus.
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Ans: 1. Protoplast.
Q15. Mark the odd one in the following groups.
- Chilli mosaic virus.
- Tobacco Mosaic virus.
- Leaf curl.
- Curl blight.
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Ans: 1. Curl blight.
Q16. The biggest constraint of plant breeding is:
- Availability of desirable gene in the crop and its wild relatives.
- Infrastructure.
- Trained manpower.
- Transfer of genes from unrelated sources.
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Ans: 1. Availability of desirable gene in the crop and its wild relatives.
Enough infrastructures is available for the purpose and there is not dearth of trained manpower because of over thousands of years
of experience in farming.
Q17. Controlled breeding experiment in animals are carried out by:
- MOET.
- Artificial insemination.
- Cloning.
- Both (a) and (b).
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Ans: 4. Both (a) and (b).
Q18. Sonalika and Kalyan Sona are varieties of:
- Wheat.
- Rice.
- Millet.
- Tobacco.
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Ans: 1. Wheat
Q19. Breeding of crops to increase the levels of essential nutrients, is called.
- Biofortification.
- Biomagnification.
- Bioinformatics.
- Biotechnology.
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Ans: 1. Biofortification.
Q20. Which one of the following is not a fungal disease?
- Rust of wheat.
- Smut of Bajra.
- Black rot of crucifers.
- Red rot of sugarcane.
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Ans: 3. Black rot of crucifers.
Black rot of crucifers is a bacterial disease.
Q21. An explant is:
- Dead plant.
- Part of the plant.
- Part of the plant used in tissue culture.
- Part of the plant that expresses a specific gene.
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Ans: 3. Part of the plant used in tissue culture.
Explant is used for growing a whole new plant.
Q22. Mark the odd one in the following groups.
- Outerossing.
- Inbreeding.
- Inter-specific hybridisation.
- Cross-breeding.
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Ans: 2. Inbreeding.
Q23. Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is
because of:
- Shorter rice plant.
- Better irrigation facilities.
- Early yielding rice variety.
- Disease resistant rice variety.
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Ans: 3. Early yielding rice variety. Several South Indian states raise 2-3 crops of rice annually. The agronomic feature that makes this possible is because of early yielding rice variety.
Q24. More than 70 per cent of livestock population is in:
- Denmark.
- India.
- China.
- India and China.
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Ans: 4. India and China.
More than 70% of the world livestock population is in India and China, but contribution to the world farm produce is only 25% (means
productivity per unit is very low).