OnlineCBT
Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS
हिन्दीIf an anther of a diploid plant (\( 2n = 24 \)) has 30 sporogenous cells in each of its four microsporangia, what will be the total number of pollen grains produced and the chromosome number in each vegetative cell?
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Correct answer · Option B
480 pollen grains; 12 chromosomes
Explanation
Total sporogenous cells (PMCs) in the anther = \( 4 \times 30 = 120 \). Each PMC forms 4 pollen grains, so total pollen grains = \( 120 \times 4 = 480 \). The pollen grain represents the haploid male gametophyte (\( n \)), so the vegetative cell has \( n = \frac{24}{2} = 12 \) chromosomes.
