Multiple choice

The _______ divides into two male gametes or nuclei which move to the tip of the tube and lie in the mass of cytoplasm.

  1. generative nucleus

  2. tube nucleus

  3. zygote

  4. embryo

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

The generative nucleus in the pollen tube divides mitotically to form two male gametes, which move toward the tube tip. The tube nucleus guides tube growth but doesn't form gametes. Zygote and embryo form after fertilization.