Strategies for Enhancement in Food Production – Daily Practice Problem (DPP)

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🎯 NEET 2026 Daily Practice Problem (DPP)

Class 12 | Unit 3: Biology in Human Welfare | Topic: Strategies for Food Production

Q1. Which of the following poultry diseases is caused by a virus?

  1. Coccidiosis
  2. Ranikhet
  3. Fowl cholera
  4. Pullorum
✅ View Answer & Explanation

Correct Answer: (2) Ranikhet
Explanation: Ranikhet (Newcastle disease) is a highly contagious viral disease of poultry. Coccidiosis is protozoan; Fowl cholera and Pullorum are bacterial.

Q2. In MOET (Multiple Ovulation Embryo Transfer) technology, the cow is administered hormones with which activity?

  1. LH-like
  2. FSH-like
  3. Progesterone-like
  4. Estrogen-like
✅ View Answer & Explanation

Correct Answer: (2) FSH-like
Explanation: FSH-like activity induces follicular maturation and superovulation (production of 6-8 eggs per cycle instead of one).

Q3. Which of the following is an improved breed of cattle?

  1. Jersey
  2. Leghorn
  3. Hisardale
  4. Mule
✅ View Answer & Explanation

Correct Answer: (1) Jersey
Explanation: Jersey is an improved breed of cattle (cow). Leghorn is poultry, Hisardale is sheep, and Mule is an interspecific hybrid.

Q4. Hisardale is a new breed of sheep developed in Punjab by crossing:

  1. Bikaneri ewes and Marino rams
  2. Marino ewes and Bikaneri rams
  3. Deccani ewes and Bikaneri rams
  4. Bikaneri ewes and Deccani rams
✅ View Answer & Explanation

Correct Answer: (1) Bikaneri ewes and Marino rams
Explanation: This is an example of cross-breeding to combine desirable qualities of two different breeds.

Q5. Inbreeding depression can be overcome by:

  1. Out-crossing
  2. Cross-breeding
  3. Interspecific hybridization
  4. Continued inbreeding
✅ View Answer & Explanation

Correct Answer: (1) Out-crossing
Explanation: A single outcross (mating between animals of same breed but no common ancestors for 4-6 generations) often helps to overcome inbreeding depression.

Q6. ‘Pusa Komal’ is a variety of Cowpea resistant to:

  1. White rust
  2. Bacterial blight
  3. Chilly mosaic virus
  4. Leaf curl
✅ View Answer & Explanation

Correct Answer: (2) Bacterial blight
Explanation: Pusa Komal (Cowpea) is resistant to bacterial blight. Pusa Swarnim (Brassica) is resistant to white rust.

Q7. Which part of the plant is best suited for making virus-free plants through tissue culture?

  1. Bark
  2. Vascular bundle
  3. Meristem (Apical and Axillary)
  4. Node
✅ View Answer & Explanation

Correct Answer: (3) Meristem (Apical and Axillary)
Explanation: The meristem is generally free of viruses because cell division occurs faster than viral multiplication.

Q8. The phenomenon of somatic hybridization involves the fusion of:

  1. Two gametes
  2. Two somatic cells after removing cell walls (Protoplasts)
  3. Two nuclei
  4. Male gamete and somatic cell
✅ View Answer & Explanation

Correct Answer: (2) Two somatic cells after removing cell walls (Protoplasts)
Explanation: Isolated protoplasts from two different varieties of plants are fused to get hybrid protoplasts, which can be grown to form a new plant (Pomato).

Q9. ‘Himgiri’ developed by hybridization and selection for disease resistance against rust pathogens is a variety of:

  1. Chilli
  2. Maize
  3. Sugarcane
  4. Wheat
✅ View Answer & Explanation

Correct Answer: (4) Wheat
Explanation: Himgiri is a wheat variety resistant to leaf and stripe rust and hill bunt.

Q10. Biofortification refers to:

  1. Breeding crops with higher levels of vitamins and minerals
  2. Use of biofertilizers
  3. Biological control of pests
  4. Preservation of food using biological methods
✅ View Answer & Explanation

Correct Answer: (1) Breeding crops with higher levels of vitamins and minerals
Explanation: It aims to improve public health (e.g., Vitamin A enriched rice, Iron fortified rice).

Q11. The term ‘Totipotency’ refers to the capacity of a:

  1. Cell to generate a whole plant
  2. Bud to generate a whole plant
  3. Seed to germinate
  4. Cell to enlarge in size
✅ View Answer & Explanation

Correct Answer: (1) Cell to generate a whole plant
Explanation: Any living plant cell (explant) capable of generating a whole plant under sterile conditions in a nutrient medium is totipotent.

Q12. Which of the following is a marine fish?

  1. Rohu
  2. Catla
  3. Hilsa
  4. Common Carp
✅ View Answer & Explanation

Correct Answer: (3) Hilsa
Explanation: Hilsa, Sardines, Mackerel, and Pomfrets are marine fishes. Rohu, Catla, and Common Carp are freshwater fishes.

Q13. ‘Atlas 66’ is a variety of wheat having high:

  1. Carbohydrate content
  2. Protein content
  3. Vitamin C content
  4. Fat content
✅ View Answer & Explanation

Correct Answer: (2) Protein content
Explanation: It has been used as a donor for improving cultivated wheat (Biofortification).

Q14. Apiculture refers to the rearing of:

  1. Silkworms
  2. Lac insects
  3. Honey bees
  4. Prawns
✅ View Answer & Explanation

Correct Answer: (3) Honey bees
Explanation: Apiculture is the maintenance of hives of honeybees for the production of honey and beeswax.

Q15. Sonalika and Kalyan Sona are varieties of:

  1. Rice
  2. Wheat
  3. Maize
  4. Mustard
✅ View Answer & Explanation

Correct Answer: (2) Wheat
Explanation: High-yielding and disease-resistant varieties of wheat introduced in India in 1963.

Q16. Jaya and Ratna are semi-dwarf varieties of:

  1. Wheat
  2. Rice
  3. Cowpea
  4. Mustard
✅ View Answer & Explanation

Correct Answer: (2) Rice
Explanation: Developed in India following the introduction of IR-8 (from Philippines) and Taichung Native-1 (from Taiwan).

Q17. Parbhani Kranti, a variety of Bhindi (Okra), is resistant to:

  1. Bacterial blight
  2. Yellow mosaic virus
  3. Aphids
  4. Shoot borer
✅ View Answer & Explanation

Correct Answer: (2) Yellow mosaic virus
Explanation: Resistance was transferred from a wild species, resulting in the new variety *Abelmoschus esculentus* called Parbhani Kranti.

Q18. Germplasm collection refers to:

  1. Collection of all diverse alleles for all genes in a given crop
  2. Collection of high-yielding varieties only
  3. Collection of germ cells for storage
  4. Collection of only wild relatives
✅ View Answer & Explanation

Correct Answer: (1) Collection of all diverse alleles for all genes in a given crop
Explanation: The entire collection (of plants/seeds) having all the diverse alleles for all genes in a given crop is called germplasm collection.

Q19. Which of the following is used as an explant for micropropagation?

  1. Dead tissue
  2. Whole seed
  3. Shoot tip
  4. Fruit wall
✅ View Answer & Explanation

Correct Answer: (3) Shoot tip
Explanation: Explant is any part of a plant taken out and grown in a test tube. Shoot tips are preferred for virus-free culture.

Q20. ‘Pomato’ is a somatic hybrid produced by the fusion of:

  1. Potato and Tomato
  2. Potato and Brinjal
  3. Tomato and Brinjal
  4. Papaya and Tomato
✅ View Answer & Explanation

Correct Answer: (1) Potato and Tomato
Explanation: Though it was successful in formation, the resulting plant did not have all the desired agronomic characteristics for commercial utilization.

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