(a) What is the minimum interior angle possible for a regular polygon? Why?
(b) What is the maximum exterior angle possible for a regular polygon?

Reproduction in flowers takes place by the process of pollination. 

When the pollen grains transferred from the anther of the male flower to the stigma of the female flower (same or another flower) is known as Pollination.

Transfer of pollen is caused by pollinating agents such as wind, insects, birds, animals, including humans. 

There are two types of pollination:-

1. Self-Pollination-  This types of pollination occur when the pollen of one flower transfers to the stigma of the same flower, or another flower of the same plant.

2. Cross-Pollination- This types of pollination occurs when the pollen of one flower transfers to the stigma of another flower of different plants of the same species.