Question

Describe the structure of a 3-celled pollen grain of an angiosperm?​

Answer 1

it has a vegetative cell and generative cell, generative cell further divides mitotically and forms haploud male gamates hence it is called three food material.

Answer 2

Explanation:

Structure of 3-celled pollen grain :

(i) Pollen grains are normally spherical in shape. (ii) Each pollen grain has a prominent two-layered wall. (iii) The outer layer is called exine and the inner layer is called intine. ... (vii) A mature pollen grain has two cells - a vegetative cell and a generative cell.