Q. There are 10 flowers in one individual plant of crotalaria. In each microsporangium of every stamen of all the flowers, 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
Explanation
$Crotalaria$ is a member of Papilionaceae (Fabacese), in which 10 stamens are present in a flower. Each stamen has four microsporangia, in which microspore mother cells are found. Each microspore mother cell gives rise to a pollen tetrad. Thus, 10 flowers (with 10 stamens in each) having 30 microsporangia in each microsporangium will form 48,000 pollen grains.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.