Assertion: Pollen mother cells (PMCs) are the precursor cells that give rise to pollen grains.
Reasoning:: Each PMC gives rise to two pollens.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Assertion (A) is true but Reason (R) is false.
Explanation:
Assertion: "Pollen mother cells (PMCs) are the precursor cells that give rise to pollen grains." – True
- Pollen mother cells (PMCs) are diploid cells found in the microsporangium (anther).
- Each PMC undergoes meiosis to produce four haploid microspores, which later develop into pollen grains.
Reason: "Each PMC gives rise to two pollens." – False
- A single PMC undergoes meiosis, producing four (not two) haploid microspores.
- Each microspore develops into a single pollen grain, meaning that one PMC gives rise to four pollen grains.