Multiple choice

In ______, the pollen from the anther fails to germinate on the stigma of the flower.

  1. protandry

  2. protogyny

  3. self sterility

  4. heterostyly

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Self sterility is a physiological mechanism where pollen from the anther cannot germinate on the stigma of the same flower. This prevents self-pollination and promotes cross-pollination, increasing genetic diversity.