Question

(a) What is menstruation? Why does menstruation occur?
(b) Write the various steps involved in the sexual reproduction in animals.
​(c) Write the differences between aerobic respiration and anaerobic respiration in tabular form. Name one organism which uses aerobic and another which uses anaerobic mode of respiration.

Answer 1

Answer:

a) if fertilization does not occur, the released egg and the thickned lining of the uterus along with its blood vessels are shed from the body. this is called mensuration.