Question

Endothecium layer of anther lobes is present

• A. Outside the epidermis
• B. Just inside the epidermis
• C. In the innermost layer
• D. In the middle region

Answer 1

Answer: (B)

Structure of microsporangium: In a transversesection, a typical microsporangium appears nearcircular in outline. 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. It nourishes the developing pollen grains. Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.