Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?
- Geitonogamy
- Xenogamy
- Cleistogamy
- Autogamy
Answer
(2) Xenogamy
Solution
Autogamy and cleistogamy ⇒ pollen from the same flower.
Geitonogamy ⇒ pollen from another flower of the same plant ⇒ genetically similar to autogamy.
Xenogamy ⇒ transfer of pollen grains from the anther to the stigma of a different plant.
As per NCERT, xenogamy is the only type of pollination which brings genetically different types of pollen grains to the stigma.
Answer: (2)