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NCERT Biology: Reproduction Chapter

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Questions and Answers

What is the primary advantage of sexual reproduction over asexual reproduction?

Enhanced adaptability to changing environments (correct)

Reduced energy expenditure

Production of genetically identical offspring

Increased reproductive speed

Which of the following is a characteristic of asexual reproduction?

Increased complexity of reproductive structures

Genetic variation among offspring

Production of offspring from two parents

Genetically identical progeny (correct)

What is the primary focus of the 'Reproduction' chapter in the NCERT biology textbook?

Examining the mechanisms of reproduction in different species (correct)

Comparing and contrasting different types of reproductive structures

Investigating the evolutionary history of reproduction

Evaluating the role of reproduction in ecosystem functioning

Why is reproductive health important in the context of reproduction?

It prevents the transmission of sexually transmitted infections Signup and view all the answers

What is a key difference between sexual and asexual reproduction?

The number of parents involved Signup and view all the answers

Why is genetic variation among offspring advantageous in changing environments?

It enables organisms to adapt to changing environments more effectively Signup and view all the answers

Study Notes

Reproduction

Living organisms use various mechanisms to perpetuate their species, including sexual and asexual modes of reproduction.

Sexual Reproduction

Involves the fusion of gametes from two parents, resulting in genetic variation among offspring.
Enhances adaptability to changing environments due to genetic variation.
Occurs in both plants and animals, with diverse reproductive structures and processes.

Asexual Reproduction

Involves the production of offspring from a single parent.
Often results in genetically identical progeny.
Employed by different species to ensure the continuation of their lineage.

Reproductive Health

Importance of reproductive hygiene to prevent infections.
Contraception methods to prevent unwanted pregnancies.
Prevention and treatment of sexually transmitted infections (STIs).

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Description

Explore the mechanisms of reproduction in living organisms, including sexual and asexual modes, their advantages and disadvantages, and genetic variation.