+1 vote
in Class 10 by kratos

State the changes that take place in the ** when:

(i) Implantation of embryo has occurred

(ii) Female gamete/egg is not fertilised

1 Answer

+1 vote
by kratos
Best answer

(i) When implantation has occurred in ** of mother, the inner lining of the ** thickens and is richly supplied with the blood vessels to provide nourishment to the growing embryo.

(ii) If the egg is not fertilised, it lives for one day. Since, the thickened ** lining is no more required, it slowly breaks down and comes out of the ** as blood and mucous known as menstruation which lasts for about two to eight days.