Male gametes are produced in
Pollen grain
Ovules
Fruits
Seed
Assertion : If pollen mother cells has $42$ chromosomes, the pollen has only $21$ chromosomes.
Reason : Pollens are formed after meiosis in pollen mother cell.
Tapetal cells are characterized by
During meiosis in pollen mother cell the daughter cells are interconnected by passages. The whole structure is called
Which one of the following is resistant to enzyme action?
Identify $A$ and $B$ in diagram given below: