How is the entry of only one sperm and not many,ensured into an ovum during fertilisation in humans?

What is colostrum?Why are breast-fed babies likely to be healthy?

Explain the functions of myometrium and endometrium in human females.

What are the major functions of male accessory ducts and glands?

Name the pituitary hormones influencing Leydig cells and Sertoli cells present in human testes.Explain the functions of these cells.

Identify True/False statements. Correct each false statement to make it true:
(a) Androgens are produced by Sertoli cells. (True/False)
(b) Spermatozoa get nutrition from Sertoli cells. (True/False)
(c) Leydig cells are found in ovary. (True/False)
(d) Leydig cells synthesise androgens. (True/False)
(e) Oogenesis takes place in corpus luteum. (True/False)
(f) Menstrual cycle ceases during pregnancy. (True/False)
(g) Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)

The correct sequence of spermatogenic stages leading to the formation of sperms in a mature human testis is

Which one of the following is the most likely root cause why menstruation is not taking place in the regularly cycling human female?

Which one of the following is the correct matching of the events occurring during menstrual cycle?

Foetal ejection reflex in human female is induced by

Some important events in the human female reproductive cycle are given below.Arrange the events in a proper sequence.A-secretion of FSH, B-growth of corpus luteum, C-growth of the follicle and oogenesis, D-ovulation, E-sudden increase in the levels of LH