The outermost and innnermost wall layers of microsporangium in an anther are respectively

Options

A. Endothecium and tapetum
B. Epidermis and endodermis
C. Epidermis and middle layer
D. Epidermis and tapetum

Answer

D

Explanation

The outermost and innermost wall layers of microsporangium in an anther are respectively: epidermis and tapetum. A typical microsporangium is generally surrounded by four-wall layers, that is, the epidermis, (outermost protective layer), endothecia, (middle fibrous layers) and the tapetum (innermost nutritive layer).