Multiple choice

Structure that grows toward the ovary through the style from the pollen grains on the stigma.

  1. filament

  2. pollen tube

  3. anther

  4. cotyledon

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

After a pollen grain lands on the stigma, it germinates and grows a pollen tube down through the style to deliver the sperm cells to the ovary.