Practice Questions →

Chapter 9: Strategies for Enhancement

NCERT Solutions for CBSE Class 10 Biology — 17 solved questions with detailed explanations.

17

Questions

0

Topics

Solved Questions

Q1. Green revolution in India was led by:

Norman Borlaug
M.S. Swaminathan
Verghese Kurien
Birbal Sahni

Difficulty: Easy · Topic: Green Revolution

Solution

M.S. Swaminathan is the father of Green Revolution in India (1960s). Norman Borlaug is its global architect.

Q2. MOET stands for:

Multiple Ovulation Embryo Transfer
Multiple Organism Enhancement Technology
Mono Ovulation Embryo Transfer
Multiple Organ Embryo Transfer

Difficulty: Easy · Topic: Animal Breeding

Solution

MOET = Multiple Ovulation Embryo Transfer. Used in animal breeding to produce multiple offspring from superior females.

Q3. Hybrid vigor (heterosis) means:

mutation
inferior offspring
same as parents
superior hybrid offspring

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

superior hybrid offspring.

Q4. Somatic hybridization involves:

fusion of protoplasts
cross-pollination
vegetative propagation
seed hybridization

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

fusion of protoplasts.

Q5. Inbreeding depression is:

no effect
increased fitness
mutation
reduced fitness after many generations of inbreeding

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

reduced fitness after many generations of inbreeding.

Q6. Outbreeding includes:

inbreeding
selfing
outcrossing, cross-breeding, interspecific hybridization
cloning

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

outcrossing, cross-breeding, interspecific hybridization.

Q7. Artificial selection is:

human-directed breeding for desired traits
natural selection
mutation breeding
random mating

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

human-directed breeding for desired traits.

Q8. Mutation breeding uses:

mutagens to create genetic variation
cloning
hybridization
selection

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

mutagens to create genetic variation.

Q9. Tissue culture requires:

pollination
soil
seeds
aseptic conditions, nutrient medium, hormones

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

aseptic conditions, nutrient medium, hormones.

Q10. Somaclonal variation arises from:

hybridization
mutation breeding
natural selection
tissue culture (genetic variation among clones)

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

tissue culture (genetic variation among clones).

Q11. Embryo rescue is used when:

no fertilization
normal development occurs
only in vitro
hybrid embryo aborts naturally

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

hybrid embryo aborts naturally.

Q12. Cryopreservation stores biological material at:

25°C
100°C
0°C
-196°C (liquid nitrogen)

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

-196°C (liquid nitrogen).

Q13. Micropropagation produces:

seeds
many plants from small tissue (clones)
pollen
fruits

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

many plants from small tissue (clones).

Q14. Green revolution increased production of:

only vegetables
wheat and rice mainly
only fruits
only pulses

Difficulty: Easy · Topic: Strategies for Enhancement

Solution

wheat and rice mainly.

Q15. Tissue culture technique is:

selection
hybridization
micropropagation using totipotency
gene therapy

Difficulty: Easy-Medium · Topic: Strategies for Enhancement

Solution

micropropagation using totipotency.

Q16. Biofortification aims to:

reduce pests
increase yield only
improve nutritional quality of crops
improve taste

Difficulty: Easy-Medium · Topic: Strategies for Enhancement

Solution

improve nutritional quality of crops.

Q17. SCP stands for:

Specialized Cell Process
Simple Carbon Product
Single Cell Protein
none

Difficulty: Easy-Medium · Topic: Strategies for Enhancement

Solution

Single Cell Protein.

Other Chapters in Biology

Ch 1: Reproduction in Organisms Ch 2: Sexual Reproduction in Plants Ch 3: Human Reproduction Ch 4: Reproductive Health Ch 5: Principles of Inheritance Ch 6: Molecular Basis of Inheritance Ch 7: Evolution Ch 8: Human Health & Disease Ch 10: Microbes in Human Welfare Ch 11: Biotechnology Principles Ch 12: Biotechnology Applications Ch 13: Organisms & Populations Ch 14: Ecosystem Ch 15: Biodiversity & Conservation Ch 16: Environmental Issues

Want to practice these questions interactively?

Get instant feedback, track progress, and improve with adaptive practice.

Start Practicing Free →