Botany - Sexual Reproduction in Flowering Plants Question with Solution | TestHub

It is generally surrounded by four wall layers - the epidermis, endothecium, middle layers and the tapetum. The outer three wall layers perform the function of protection and help in dehiscence of anther to release the pollen. The innermost wall layer is the tapetum and its function is the nourishment of sporogenous cell. It secretes several enzyme, hormone, pollen kit substances etc.