Question

1. Fill in the blanks.
1. The structure formed by the fusion of a male gamete with a female gamete is called_______.
2. In humans, fertilization is______.
animals are those which lay eggs.
4. In humans, male reproductive organs are________________,__________________
and________________.
5. In humans, sperms are produced by
_______ and eggs are produced by_________.
6. Different stages in the life cycle of a butterfly are eggs,______,______and____
(Give the stages in sequence.)
7. X and Y chromosomes are called________.
8. Chemical substances secreted by endocrine glands are called_________.
9.____________gland is called the master gland.
10. Maturation of reproductive organs takes place during_____________.
11. Voice box is_____________
in boys than that in girls.
12. Secondary sexual characters start developing during______________.​

Answer 1

Hey heres ur ans

In the attachment