Assertion: Pollen mother cells (PMCs) are the precursor cells that give rise to pollen grains.
Reasoning:: Each PMC gives rise to two pollens.

Assertion (A) is true but Reason (R) is false .

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.