Write a short note on fertilisation. (Till the formation of zygote.)

Write a short note on sperm. (With a labeled diagram.)###Draw a labelled diagram of sperm.

Mention the main reprodutive events in humans.

What is menstrual cycle? Which hormones regulate menstrual cycle?

How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?

Explain the sex of the baby is determined by the father and not by the mother ###In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?

Define (i) Menarche (ii) Menopause (iii) Menstrual cycle.

Write a short note on hormonal regulation of spermatogenesis.###Name the hormones involved in regulation of spermatogenesis.

Write two major functions each of testis and ovary.

What are the major components of seminal plasma?