Question

If each microsporangium contain 75 pollen mother cells, what is the maximum number of pollen grains produced by a Datura flower?

• A. 300
• B. 1200
• C. 6000
• D. 3000

Answer 1

The correct option is C

6000

No. of PMCs present in microsporangium = 75

No. of pollen grains produced on meiosis = 75 $\times$ 4 = 300

No. of pollen grains produced by dithecous anther = 300 $\times$ 4
one stamen (tetrasporangiate) = 1200

Total no. of pollen grains produced by 5 stamens = 1200 $\times$ 5
(Datura flower has 5 stamens) = 6000