Draw a diagram of the male reproductive system and explain its various parts.

What is regeneration? Give one example of an organism that shows this process and one organism that does not. Why does regeneration not occur in the latter?

What is multiple fission? How does it occur in an organism? Explain briefly. Name one organism which exhibits this type of reproduction.

State the changes that take place in the uterus when:

1. Implantation of embryo has occurred.
2. Female gamete/ egg is not fertilised.

List three distinguish features between sexual and asexual types of reproduction, in tabular form.

How are the modes for reproduction different in unicellular and multicellular organisms?

Suggest three contraceptive methods to control the size of human population which is essential for the health and prosperity of a country. State the basic principle involved in each.

1. List in tabular form two differences between binary fission and multiple fission.
2. What happens when a mature Spirogyra filament attains considerable length.

Explain the mechanism of sex determination in humans.

What is placenta? Describe its two major functions.