Xenogamy: Cross-Pollination Genetic Variation — NEET Biology
✅ Asked in NEET 2026Xenogamy – 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.
This paragraph was tested 2 times in NEET.
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)
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