Question

When the pollen grains in a pollen sac are agglutinated into a mass, it is called ______.

Answer 1

When the pollen grains in a pollen sac are agglutinated into a mass, it is called pollinium.

Explanation:

A pollinium is a single mass of pollen grains found in some plants, especially in the family Asclepiadaceae, where all microspores in a pollen sac stick together to form this mass. By ensuring the transfer of a large number of pollen grains together during pollination, this adaptation aids in efficient pollination.