Multiple choice

Micropyle helps in

  1. germination of pollen grains

  2. growth of pollen tube

  3. coming out of pollen tube from pollen grains

  4. allowing entry of pollen tube

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

Micropyle is the narrow passage left by the integuments at one end of the ovule. It allows the entry of pollen tube into the ovule. This phenomenon is known as porogamy. For example, lily.