Assertion: Geitonogamy is functionally cross-pollination involving pollinating agent and genetically it is similar to autogamy since the pollen grains come from the another plant.
Reason: Geitonogamy is a type of pollination which during pollination brings genetically different types of pollen grains to the stigma.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) -Both Assertion (A) and Reason are false (F ) .
Geitonogamy: Geitonogamy involves the transfer of pollen grains from the anther to the stigma of another flower of the same plant. While functionally it is a form of cross-pollination since it involves a pollinating agent, genetically it is similar to autogamy because the pollen grains come from the same plant. Geitonogamy does not introduce genetically different pollen to the stigma.
It is a form of self-pollination because the pollen grains come from a different flower on the same plant, not from another plant. In geitonogamy, the pollinating agent (such as wind, insects, or other animals) facilitates the transfer of pollen between flowers on the same plant.
To summarize, geitonogamy is a form of self-pollination involving the transfer of pollen between flowers on the same plant, and it is not functionally cross-pollination. The genetically different types of pollen grains come from different flowers on the same plant, not from another plant.