Question

If 400 pollen grains are produced from a single monothecous anther from its components equally, what is the number of pollen grain mother cells in each of the sporangia?

• A. 200
• B. 100
• C. 50
• D. 25

Answer 1

Answer: (B)

100

Monothecous anther means anther having only one theca or lobe.

1 pollen mother cell undergoes meiosis to form four haploid microspores each of which develops into pollen grain.

Hence, for 4 pollen grains, 1 pollen mother cell is required.

So, for 400 pollen grains, pollen mother cells required = 400/4 = 100

So, the correct answer is '100'.