Question

How many mitosis cycles are required of microspore mother cells, to produce 100 zygotes?

• A. 50
• B. 13
• C. 25
• D. None of the above

Answer 1

Answer: (C)

25

• A zygote is the product of fusion of male gamete and female gamete.

100 zygotes mean 100 male gametes i.e. 100 pollen grains or 100 microspores are required.

• 1 microspore mother cell forms 4 haploid microspores by meiosis.

So, for 100 microspores, microspore mother cells required will be equal to 100/4 = 25

So, the correct answer is '25'.