Write two major functions each of testis and ovary.

Write the function of each of the following:
Seminal vesicle.

Why does corpus luteum secrete large amount of progesterone during luteal/ secretory phase of the menstrual cycle?

Identify A, B, C and D with reference to gametogenesis in humans in the flow chart given below:

What is the number of chromosomes in the following cells of a human male?
Spermatids.

First half of the menstrual cycle is called proliferative phase as well as follicular phase. Explain.

What is corpus luteum? Under what conditions does it undergo degeneration?

Where do sperms mature and become motile?

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

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