Question

Pollen grains are generally spherical and measures about

• A. 25 - 50 centimeters
• B. 25 - 50 milimeters
• C. 25 - 50 micrometers
• D. 25 - 50 nanometers

Answer 1

The correct option is C 25 - 50 micrometers

The pollen grain is the male gametophyte which contains the male gametes. The pollen grain is spherical and measures about 25-50 micrometers. It is surrounded by two layers as exine which forms the outer layer and intine which forms the inner layer. The generative cell divides to form the two male gametes.

Thus, the correct answer is option C.