what are pollen grains ? why are they produced in flowers?
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Pollen grains are male microgametophytes of seed plants which produce male gametes.It is formed in the microsporangia in male cone of a conifers or other gymnosperms and in the anthers of an angiosperm flower. Pollen grains are male microgametophytes of seed plants which produce male gametes.
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pollen grains are small particles which is present in stigma and it produces to form ovules ..
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