Multiple choice

In ______, the flowers possess structural features which do not allow self pollination.

  1. protogyny

  2. protandry

  3. herkogamy

  4. heterostyly

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

Herkogamy is a structural mechanism where physical barriers (like unequal stamen and stigma positions or floral architecture) prevent self-pollination. Protogyny and protandry are temporal mechanisms (timing differences), while heterostyly involves different style lengths in different flowers.