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pollen tube

/ˈpɒlən tjuːb/

翻译: 花粉管是花粉粒落到雌蕊柱头上后萌发形成的细长管状结构,在被子植物中负责将雄性配子输送到胚珠以完成受精。

1 个条目

phrase

/ˈpɒlən tjuːb/C1formalscientific
  • zh花粉管是花粉粒落到雌蕊柱头上后萌发形成的细长管状结构,在被子植物中负责将雄性配子输送到胚珠以完成受精。

A slender tube that grows from a pollen grain after it lands on a stigma, carrying male gametes to the ovule for fertilization in flowering plants.

  1. Plant reproduction structureC1formal

    A tube that grows from a pollen grain after it lands on a stigma, carrying sperm cells to the ovule for fertilization.

    zh花粉管

    • The pollen tube grows down through the style to reach the ovary.
    • Scientists observed the pollen tube under a microscope.
    • The growth of the pollen tube is essential for seed formation.