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Select the correct statement.
Pollination is transfer of pollen grains from stamen to stigma.
Pollination is the growth of pollen tube in ovule.
Pollination is visit of insects to the flower.
Pollination is germination of pollen grains.
Pollination is transfer of pollen grains from stamen to stigma.
Pollination is defined as the transfer of pollen grains from the anther (part of the stamen, the male reproductive organ) to the stigma (part of the pistil/carpel, the female reproductive organ) of a flower. This is a crucial first step in sexual reproduction in flowering plants (angiosperms), enabling subsequent fertilization and seed formation.
Pollination is defined as the transfer of pollen grains from the anther (part of the stamen, the male reproductive organ) to the stigma (part of the pistil/carpel, the female reproductive organ) of a flower. This is a crucial first step in sexual reproduction in flowering plants (angiosperms), enabling subsequent fertilization and seed formation.
Pollination is broadly categorized into self-pollination (autogamy/geitonogamy) and cross-pollination (xenogamy). Agents of pollination include abiotic agents like wind (anemophily) and water (hydrophily), as well as biotic agents like insects (entomophily), birds (ornithophily), and bats (chiropterophily).
Pollination is the physical transfer of pollen grains from the male anther to the female stigma.
It is a pre-requisite for fertilization in flowering plants (angiosperms and gymnosperms).
Can occur via self-pollination (within the same flower or plant) or cross-pollination (between different plants of the same species).
Option A is correct because it accurately describes the precise anatomical transfer defining pollination.
Option B describes pollen tube growth, which is a post-pollination event leading to fertilization inside the ovule.
Option C refers to insect visitation (entomophily), which is merely a biological mechanism or agent aiding cross-pollination, not the definition itself.
Option D describes pollen germination, which occurs only after the pollen grain has successfully landed on a compatible stigma.
A is correct тАФ Pollination is transfer of pollen grains from stamen to stigma.
In plant biology questions for competitive exams, clearly distinguish between pre-fertilization events (pollination, gametogenesis), the fertilization event itself (syngamy and triple fusion), and post-fertilization events (fruit and seed development).
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