pollen tube

Noun
  1. (botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower;
    It penetrates the style and conveys the male gametes to the ovule (synset 111701065)
    referred to in: botany, phytology - the branch of biology that studies plants
    is a type of: plant part, plant structure - any part of a plant or fungus

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