Read the following Assertion and Reason and choose the correct option. Assertion: Microsporangium is generally surrounded by four wall layers Reason: The outer two layers perform the function of protection and help in dehiscence of anther to release the pollen

Step-by-step solution

Microsporangium 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. It nourishes the developing pollen grains