Question

Which one of the following is suitable reference to xenogamy?

• A. Ripening of androecium earlier to gynoecium
• B. Pollen grains of one flower reaching the stigma of another flower present on the same plant
• C. Pollen grains of one flower reaching the stigma of another flower, present on a different plant of the same species
• D. The inability of pollen to germinate on the stigma of the same flower.

Answer 1

Answer: (C)

Pollen grains of one flower reaching the stigma of another flower, present on a different plant of the same species

Xenogamy is also called as cross-pollination, the transfer of pollen grains from the anther to the stigma of a different plant. This is the only type of pollination which during pollination brings genetically different types of pollen grains to the stigma within the same species. The term xenogamy was first suggested by Kerner in 1876.