Question

1.Briefly explain the development of male gamet from pollen grain​

Answer 1

Explanation:

Pollen grains absorb water and nutrients of the stigmatic secretion through its germs pores. Tube nucleus migrates to Pollen tube. Formation of male gamete can occur in vegetative cell or Pollen tube. Usually generative cell comes down into Pollen tubes and then divides to form the male gametes.

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Answer 2

Mature Pollen Grains contains two cells :-

➡ A generative

➡ A pollen tube

Upon germination,, the tube cells form the pollen tube through which the generative cells migrates to enter the ovary.....

During it's transist inside the pollen tube ,,, the generative cells divides to form two male gametes (sperm cells) ...