Botany-Gymnosperms
NEET Botany Gymnosperms MCQ Question
Type: MCQ-numerical-Medium-Class 11
If a gymnosperm plant has 20 male strobili, and each strobilus produces 5 microsporangia, how many pollen grains are produced if each microsporangium gives rise to 20 microspores?
A
2000
B
4000
C
1000
D
5000
Correct Answer
Option A
Detailed Explanation
Each male strobilus produces 5 microsporangia, each microsporangium produces 20 microspores, and each microspore develops into a pollen grain. Therefore, 20 strobili x 5 microsporangia x 20 microspores = 2000 pollen grains.
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