1.

Question : (a) State any two changes seen in boys at the time of puberty. (b) Define fertilisation and implantation.

Answer»

Solution :(a) (i) Body BECOMES MUSCULAR.
(i) Facial and pubic hair.
(b) Fertilisation - It is the process of UNION of male and female gamete to form zygote.
Implantation - It is the process of attachment of EMBRYO in the uterine wall, with the help of placenta.


Discussion

No Comment Found