The type of pollination in which genetically different pollen grains fall on the stigma is known as:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Xenogamy
Option (3) Xenogamy — Correct. In xenogamy the pollen comes from a flower of a different plant. It is the only type of pollination that brings genetically different pollen to the stigma; autogamy and geitonogamy use pollen of the same plant.
Note: A similar question was also asked in CUET (UG) 2025 on 22-05-2025 (Slot 2).
NCERT Extract:
Pollination – “… (iii) Xenogamy – Transfer of pollen grains from anther to the stigma of a different plant (Figure 1.9b). This is the only type of pollination which during pollination brings genetically different types of pollen grains to the stigma.”