The doctor could hear the heartbeats in a foetus. How many days of gestation period must have passed?

Draw and label the parts of the only head region of a human sperm.
OR
Draw a well-labelled diagram of a sperm.

Spermatogenesis in human males is a hormone regulated process. Justify.

Except endocrine function, what are the other functions of placenta.

List the different parts of the human oviduct through which the ovum travels till it meets the sperm for fertilisation.

Differentiate between major structural changes in the human ovary during the follicular and luteal phase of the menstrual cycle.

Explain the events that follow up to fertilisation when the sperms come in contact with the ovum in the fallopian tube of a human female.

Where is acrosome present in humans? Write its function.

Why are the human testes located outside the abdominal cavity? Name the pouch in which they are present.

Define capacitation.