Xenogamy: Cross-Pollination Genetic Variation — NEET Biology
✅ Asked in NEET 2026Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?
Which one of the following types of pollination brings genetically different types of pollen grains to the stigma?
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination brings genetically different types of pollen grains to stigma, is: (NEET 2021)
Answer & NCERT explanation
Correct answer: B — Xenogamy
Xenogamy is the transfer of pollen from the anther to the stigma of a different plant, bringing genetically different pollen. Autogamy and cleistogamy are within the same flower, and geitonogamy is between flowers of the same plant (genetically identical).
Read more NCERT concept on the PYQ
Xenogamy – Transfer of pollen grains from 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.
Xenogamy is pollination where pollen transfers from one plant's anther to a different plant's stigma, creating genetic variation. NTA tests this to distinguish xenogamy from autogamy (self-pollination) and geitonogamy (pollen between flowers of same plant). Students often confuse these three types or miss that xenogamy is the ONLY type bringing genetically different pollen. Remember: xenogamy = different plants = genetic diversity = outbreeding. This distinction matters for understanding breeding systems, heterozygosity benefits, and reproductive isolation in flowering plants.
What does NCERT say about Xenogamy Transfer pollen grains?
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