Question

Which one of the following is not a correct explanation of cross-pollination?

• A. The pollen grains of male flowers are transferred to the stigma of the female flowers.
• B. The pollen grains are transferred from one flower to another flower, of another plant of the same species.
• C. The pollen grains are transferred from one flower to another flower situated on the same plant.
• D. The pollen grains of one flower are transferred to the stigma of the same flower.

Answer 1

Answer: (D)

Xenogamy (Gk. xencw-strange, garaos-marriage) or cross pollination is the transfer of pollen grains from the anther of one flower to the stigma of a genetically different flower or another flower of a different plant. Cross pollination is carried out with the help of an external agency (biotic or abiotic).