Question

The protective double-layered wall or covering of a pollen grain is collectively known as the ___________.

Options

• Periderm

• Sporoderm

• Exine

• Intine

Answer 1

The protective double-layered wall or covering of a pollen grain is collectively known as the Sporoderm.

Explanation:

The sporoderm is the complete wall of the pollen grain, which consists of two distinct layers: the outer exine and the inner intine.