pollen tube definition

  • noun:
    • The thin pipe created because of the pollen whole grain that penetrates an ovule and releases the male gametes.
    • the tube that develops through the wall of a pollen grain and, in seed plants, provides a passage through which a man nuclei get to the embryo sac to effect fertilization
    • a slender pipe which issues through the pollen grain on its contact with the stigma, which it penetrates, therefore conveying, its expected, the fecundating matter of the whole grain toward ovule.
    • In botany, the tube by which the fecundating factor is conveyed into the ovule.
    • (botany) a slender tubular outgrowth from a pollen whole grain when deposited in the stigma for a flower; it penetrates the style and conveys the male gametes to your ovule

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  • Hypernym for "pollen tube"
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