Question

When pollen grains of a flower of plant pollinate the stigma flower of another plant, it is called

• A. Dichogamy
• B. Geitonogamy
• C. Xenogamy
• D. Autogamy

Hint:

Xenogamy ensures genetic diversity by cross-pollination between different plants.

Answer 1

The Correct Option is C

• Pollination Types:
  • (1) Dichogamy: Temporal separation of male and female parts in the same flower, not relevant here.
  • (2) Geitonogamy: Transfer of pollen from one flower to another on the same plant, not cross-plant.
  • (3) Xenogamy: Transfer of pollen from the flower of one plant to the stigma of a flower on a different plant, matching the description.
  • (4) Autogamy: Self-pollination within the same flower, not applicable.
• Option Analysis:
  • (1) Dichogamy: Incorrect, as it’s about timing, not cross-plant pollination.
  • (2) Geitonogamy: Incorrect, as it involves the same plant.
  • (3) Xenogamy: Correct, as it involves different plants.
  • (4) Autogamy: Incorrect, as it’s self-pollination.
• Conclusion: The correct answer is (3) Xenogamy, as it describes pollination between different plants.