Question

There are $10$ flowers in plant of Crotalaria. In each microsporangium there are $30$ microspore mother cells. How many pollen grains are formed from that plant.

• A. $4,000$
• B. $10,000$
• C. $24,000$
• D. $48,000$

Answer 1

Answer: (D)

$48,000$

Crotalaria flower has 10 stamens and these 10 stamens have 10 anthers and 10 anthers have 40 microsporangia. Each microsporangia possess 40 microspore mother cells. So 30 microsporangia possess 30*40 mother cells that corresponds to 1200 microspore mother cells. Now each microspore mother cell (MMC) would produce 4 pollen grains. Therefore all MMCs would produce 1200*4=4800 pollen grains. If there are 10 flowers, then total number of pollen grains would be 48000.

So, the correct option is D.