Describe the structure of a sperm. (or) Describe the structure of human sperm with a neat labelled diagram.

Explain the structure and function of mammary glands.

Name the three primary germ layers of embryo. Also, mention any three organs or organ systems developing from each layer.

Give a detailed account on various natural methods of contraception.

Write a note on thalassemia.

Discuss the methods adopted for the improvement of human race.

Describe the steps involved in DNA finger printing.

Meselson and Stahl's experiment proved the semi-conservation mode of DNA replication. Explain.

Explain Oparin - Haldane hypothesis on evolution.

Describe the structure of HIV with a diagram

Explain the events in life cycle of Plasmodium in the secondary host/Man.

Describe the role of PCR in clinical field.

List out the uses of Transgenesis

What are the ethical issues about cloning.

List the differences between R selected and K selected species.

Point out the adaptive traits of aquatic animals

Describe in detail on population interaction.

Write a note on gene banks

Give an account on genetic diversity and community diversity.

Explain in detail about various types of extinctions.

How can air pollution be controlled?

What is the impact of agrochemicals on the living organisms?

How air pollution can be controlled?

How agrochemicals affect ecosystem?

How radioactive waste are managed? Suggest few methods of disposal of radioactive waste.(or) write an essay on Radioactive waste management.