
Explain the hormonal regulation of the process of spermatogenesis in human.

Important Questions on Human Reproduction


(b) Mention their source and the function they perform hCG, LH, FSH, Relaxin.

(i) Menstrual phase; (ii) Follicular phase; (iii) Luteal phase
(b) A proper understanding of the menstrual cycle can help immensely in family planning. Do you agree with this statement? Provide reasons for your answer.


Rashmi gave birth to three girls. Her mother-in-law blamed her for giving birth to girls. However, as we know, ova (eggs) are only of one type containing 22+X chromosomes, but sperms are of two types: one type of sperms contain 22+X chromosomes and another type of sperms contain 22+Y chromosomes. When ovum and sperm with 22+Y chromosomes are fused, a male child is formed and when ovum and sperm with 22+X chromosomes are fused, a girl child is produced.
Read the above passage and answer the following question:
In your opinion, who is responsible for the female child (mother or father)?

Rashmi gave birth to three girls. Her mother-in-law blamed her for giving birth to girls. However, as we know, ova (eggs) are only of one type containing 22+X chromosomes, but sperms are of two types: one type of sperms contain 22+X chromosomes and another type of sperms contain 22+Y chromosomes. When ovum and sperm with 22+Y chromosomes are fused, a male child is formed and when ovum and sperm with 22+X chromosomes are fused, a girl child is produced.
Read the above passage and answer the following question:
How many types of sperms are produced? (Write in words)

Rashmi gave birth to three girls. Her mother-in-law blamed her for giving birth to girls. However, as we know, ova (eggs) are only of one type containing 22+X chromosomes, but sperms are of two types: one type of sperms contain 22+X chromosomes and another type of sperms contain 22+Y chromosomes. When ovum and sperm with 22+Y chromosomes are fused, a male child is formed and when ovum and sperm with 22+X chromosomes are fused, a girl child is produced.
Read the above passage and answer the following question:
Penetration of which type of sperm into the ovum produces a male child.
