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NEET • BIOLOGY • STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

Strategies for enhancement in food production practice · Hard

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1 Hard

1 of 40

Remembering +4 | -1

Explant is required to be disinfected before placing in culture. This is done by:

View answer and explanation

Correct option: C

Clorax or hypochlorite

Option C (Clorax or hypochlorite) is correct because Clorax (sodium hypochlorite) or other hypochlorite solutions are commonly used to surface sterilize explants to prevent contamination during tissue culture.

2 Hard

2 of 40

Understanding +4 | -1

How many matching are correct

a. Mule - Fertile

b. Leghorn - Breed of cattle

c. Interspecific hybridisation-Mule

d. Outcrossing-Help to overcome inbreeding depression

View answer and explanation

Correct option: C

Two

Option D (One) is incorrect, the correct answer is C (Two). Only two statements are correct: Interspecific hybridisation-Mule and Outcrossing-Help to overcome inbreeding depression. Mule is infertile and Leghorn is a breed of poultry, not cattle.

3 Hard

3 of 40

Analyzing +4 | -1

Choose odd one w.r.t. crop variety produced through conventional breeding for insect pest resistance

View answer and explanation

Correct option: C

Pusa Lerma

Option C (Pusa Lerma) is correct because Pusa Lerma is a wheat variety known for its disease resistance (rust), not insect pest resistance, while the others are known for insect pest resistance.

4 Hard

4 of 40

Understanding +4 | -1

Assertion: Techniques called superovulation and embryo transplantation are used for cattle improvement.
Reason: Gonadotropin injection release more than one ova (superovulation) in high yielding cows. These are fertilised by artificial insemination with sperms from a pedigree bull. Early embryos are transplanted into surrogate mothers for development.

View answer and explanation

Correct option: A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Option A (Both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because the reason accurately describes the process and purpose of superovulation and embryo transplantation in cattle improvement.

5 Hard

5 of 40

Remembering +4 | -1

Consider the following statements
I. Solid stem in wheat exhibits non-preference by stem sawfly
II. In cotton, smooth leaf and absence of nectar repel bollworms
III. In maize, high aspartic acid, low nitrogen and sugar content protect them from stem borers
Which of the statements given above are correct?

View answer and explanation

Correct option: A

I, II and III

Option A (I, II and III) is correct because all three statements regarding pest resistance in wheat, cotton, and maize are accurate.

6 Hard

6 of 40

Remembering +4 | -1

Turnip mosaic disease is caused by?

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Correct option: B

Virus

Option B (Virus) is correct because Turnip mosaic disease is caused by a virus.

7 Hard

7 of 40

Remembering +4 | -1

A plant cell has potential to develop into a full plant. This is called:

View answer and explanation

Correct option: A

Totipotency

Option A (Totipotency) is correct because totipotency is the ability of a single plant cell to differentiate and develop into a complete, independent plant.

8 Hard

8 of 40

Understanding +4 | -1

Hardening in tissue culture is

View answer and explanation

Correct option: B

Acclimatization of tissue culture plants slowly before growing in the field

Option B (Acclimatization of tissue culture plants slowly before growing in the field) is correct because hardening is the process of gradually acclimating tissue culture plants to external environmental conditions.

9 Hard

9 of 40

Analyzing +4 | -1

Assertion (A) : No individual is immortal, except single-celled organisms like Planaria.
Reason (R) : There is no natural death in single – celled organisms.
In the light of above statements. Select the correct option.

View answer and explanation

Correct option: D

(A) is false, (R) is true

Option D ((A) is false, (R) is true) is correct because while single-celled organisms can divide indefinitely, Planaria are multicellular and can regenerate, but individuals are not immortal. Single-celled organisms do not experience natural death.

10 Hard

10 of 40

Remembering +4 | -1

High-yielding and disease-resistant wheat varieties are
I. Sonalkia II. Kalyan Sona
III. Jaya IV. Ratna
Choose the correct option

View answer and explanation

Correct option: A

I and II

Option A (I and II) is correct because Sonalika and Kalyan Sona are both high-yielding and disease-resistant wheat varieties.

11 Hard

11 of 40

Understanding +4 | -1

India’s wheat yield revolution in the 1960s was possible primarily due to

View answer and explanation

Correct option: C

Mutations resulting in plant height reduction

Option C (Mutations resulting in plant height reduction) is correct because the Green Revolution in India was largely due to semi-dwarf wheat varieties, which resulted from mutations.

12 Hard

12 of 40

Remembering +4 | -1

Single cell proteins provide food rich in
I. protein
II. minerals
III. fats
IV. carbohydrates and vitamins
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 single-cell proteins provide food rich in protein, minerals, fats, carbohydrates, and vitamins.

13 Hard

13 of 40

Understanding +4 | -1

The basis/root of plant breeding programmes related to hybrid plant production is

View answer and explanation

Correct option: D

Collection of variability

Option D (Collection of variability) is correct because it is the fundamental first step in any plant breeding program, providing the raw material for selection and improvement.

14 Hard

14 of 40

Remembering +4 | -1

Wonder wheat is new wheat variety developed by

View answer and explanation

Correct option: A

Mexico’s International Wheat and Maize Improvement Centre

Option A (Mexico’s International Wheat and Maize Improvement Centre) is correct because the Wonder wheat variety was developed by Mexico's International Wheat and Maize Improvement Centre (CIMMYT).

15 Hard

15 of 40

Remembering +4 | -1

An improved breed of cattle is

View answer and explanation

Correct option: B

Jersey

Option B (Jersey) is correct because Jersey is a well-known breed of cattle specifically bred for high milk production and is considered an improved breed.

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16 Hard

16 of 40

Remembering +4 | -1

Essential oils are those which:

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Correct option: C

Produce perfumes

Option C (Produce perfumes) is correct because essential oils are primarily known for their use in producing perfumes and fragrances.

17 Hard

17 of 40

Understanding +4 | -1

Which of the following is not an important characteristic of the green revolution?
I. Mechanised agriculture
II. Hybrid seeds
III. Slash and burn
Which of the above are correct?

View answer and explanation

Correct option: C

Only III

Option C (Only III) is correct because slash and burn agriculture is not a characteristic of the Green Revolution, which focused on mechanization and hybrid seeds.

18 Hard

18 of 40

Remembering +4 | -1

The various methods of crop improvement are
I. selection II. Hybridization
III. polyploidy IV. mutation breeding
V. genetic engineering
Choose the correct option

View answer and explanation

Correct option: A

I, II, III, IV and V

Option A (I, II, III, IV and V) is correct because selection, hybridization, polyploidy, mutation breeding, and genetic engineering are all methods used in crop improvement.

19 Hard

19 of 40

Remembering +4 | -1

The nutrient medium for tissue culture should have
I. sucrose
II. inorganic salts
III. growth regulators
IV. vitamins
V. amino acids
Choose the correct option

View answer and explanation

Correct option: A

I, II, III, IV and V

Option A (I, II, III, IV and V) is correct because a nutrient medium for tissue culture must contain sucrose, inorganic salts, growth regulators, vitamins, and amino acids for optimal plant growth.

20 Hard

20 of 40

Remembering +4 | -1

Which of the given high yielding wheat variety was developed by mutating Mexican wheat?

View answer and explanation

Correct option: A

Pusa Lerma

Option A (Pusa Lerma) is correct because Pusa Lerma is a high-yielding wheat variety developed by mutating Mexican wheat.

21 Hard

21 of 40

Understanding +4 | -1

Following are the steps in MOET programme for herd improvement in which a cow has been administered hormones with FSH like activity. Arrange steps

\mathrm{A}

\mathrm{D}

in their correct sequence.

A. Transferred to a surrogate mother.

B. It is either mated with an elite bull or artificially inseminated.

C. Fertilised eggs at 32 cell stage are recovered non-surgically

D. It produces 6-8 eggs instead of one egg which they normally yield per cycle.

Choose the correct option.

View answer and explanation

Correct option: C

\mathrm{D} \rightarrow \mathrm{B} \rightarrow \mathrm{C} \rightarrow \mathrm{A}

Option C (D → B → C → A) is correct because it represents the correct sequence of steps in the MOET program: superovulation, mating/insemination, egg recovery, and embryo transfer.

22 Hard

22 of 40

Understanding +4 | -1

Source of resistance genes for developing insect/pest resistant variety can be
a. Cultivated varieties
b. Wild relatives
c. Germplasm collections of the crop

View answer and explanation

Correct option: D

All a, b and c

Option D (All a, b and c) is correct because cultivated varieties, wild relatives, and germplasm collections can all serve as sources of resistance genes.

23 Hard

23 of 40

Understanding +4 | -1

Mode of nutrition of explant before organogenesis is

View answer and explanation

Correct option: D

Heterotrophic

Option D (Heterotrophic) is correct because explants, before organogenesis, rely on the culture medium for nutrients as they lack developed photosynthetic structures.

24 Hard

24 of 40

Understanding +4 | -1

Which of the following statements is true?

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because salivary glands initiate silk production, the larval stage secretes it, and boiling is a method to extract it from the cocoon.

25 Hard

25 of 40

Remembering +4 | -1

Chokla is the breed of

View answer and explanation

Correct option: B

Sheep

Option B (Sheep) is correct because Chokla is a well-known breed of sheep in India, particularly in Rajasthan.

26 Hard

26 of 40

Understanding +4 | -1

During hybridization offsprings with hybrid vigour superior to both parents are self-pollinated for a few successive generations to

View answer and explanation

Correct option: C

Get homozygosity

Option C (Get homozygosity) is correct because self-pollination in successive generations leads to increased homozygosity, stabilizing the desired traits.

27 Hard

27 of 40

Remembering +4 | -1

Methylophilus methylotrophus bacterium as

SCP

produces more

View answer and explanation

Correct option: A

Proteins

Option A (Proteins) is correct because Methylophilus methylotrophus bacterium, when used as SCP, primarily produces proteins.

28 Hard

28 of 40

Remembering +4 | -1

Which of the following is a product of cross breeding?

View answer and explanation

Correct option: D

Hisardale

Option D (Hisardale) is correct because Hisardale is a breed of sheep developed in Punjab by cross-breeding Bikaneri ewes and Marino rams.

29 Hard

29 of 40

Remembering +4 | -1

Norin-10 gene of dwarfness in wheat was originated in

View answer and explanation

Correct option: A

India

Option A ( India) is correct because the Norin-10 gene, responsible for dwarfness in wheat, originated in India.

30 Hard

30 of 40

Remembering +4 | -1

Some plants developed by meristem culture are

View answer and explanation

Correct option: D

All of these

Option D (All of these) is correct because banana, sugarcane, and potato are all plants that can be developed through meristem culture.

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

✓ This set contains 40 single-correct-answer MCQs on STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

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