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Question

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


A

300

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B

1200

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C

6000

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D

3000

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Solution

The correct option is C

6000


No. of PMCs present in microsporangium = 75

No. of pollen grains produced on meiosis = 75 × 4 = 300

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

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


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