Question

78.
Number of meiotic divisions that occur during pollen production in a flower of Dolichos,
when its each anther lobe contains 40 pollen mother cells
1) 801
2) 800
3) 200
4) 201​

Answer 1

the aksar h forgiving hydrology 800

Answer 2

Answer:

2) 800

Explanation:

In dithecous anthers number of sporangia is 4. Each microsporangia  has many pollen cells which turn into tetrads by meiotic division. These tetrads become 4 pollen grains when it attains maturity and get separated.One pollen mother cells gives rise to 4 tetrads.

In angiosperm in one pollen grain 2 male gametes are produced for double fertilization.Therefore

800 male gametes= 400 pollen grains

400 pollen grains=100 pollen mother cells

100 pollen mother cells in 4 microsporangia=25 pollen mother cells in one microsporangium