Question

At the time of pollination angiospermic pollen grain is mostly * 2 points a) One celled structure b) Two celled structure c) Three celled structure d) Four celled structure​

Answer 1

Explanation:

Answer

Correct option is

D

All of these

Tapetum is important for the nutrition and development of pollen grains, as well as a source of precursors for the pollen coat.

Secretion of the enzyme callase (β-1,3- glucanase) to dissolve the callosic wall of the tetrad and set them free.

Formation of the pollen wall during the postmeiotic period.

So, the correct option is 'All of these