At the time of pollination, how many cells are formed in the pollen grains
One
Two
Three
Four
Assertion : If pollen mother cells has $42$ chromosomes, the pollen has only $21$ chromosomes.
Reason : Pollens are formed after meiosis in pollen mother cell.
Ubisch bodies found in tapetal cell help in formation of
Which one of the following is resistant to enzyme action?
Pollen grains are released from
The pollen grain is