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micropyle    
卵孔; 珠孔

卵孔; 珠孔

micropyle
n 1: minute opening in the wall of an ovule through which the
pollen tube enters


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  • Micropyle | plant anatomy | Britannica
    …tissues, through an opening (micropyle) of the egg, and enters a cell near the micropyle (synergid), in which the two male gametes are discharged The unique feature of this phase of angiosperm development is that two fertilizations occur
  • Micropyle - an overview | ScienceDirect Topics
    The micropyle is the pore or canal within one or more integuments through which (in angiosperms) a pollen tube traverses prior to fertilization (In nonangiospermous seed plants, the micropyle receives pollen grains directly )
  • 4. 6. 3: Mature Embryos and Seed Structure - Biology LibreTexts
    The micropyle is a small round structure next to the hilum where the pollen tube entered Figure 4 6 3 1: The external structures of a bean seed, an example of a eudicot (7X) The seed coat surrounds the seed There is a round micropyle, where the pollen tube originally entered the ovule
  • MICROPYLE Definition Meaning - Merriam-Webster
    The meaning of MICROPYLE is a minute opening in the integument of an ovule of a seed plant
  • Micropyle - Wikipedia
    Micropyle (botany) a minute opening in the integument of an ovule of a seed plant
  • The Significance of Micropyle: An Essential Structure for Germination . . .
    The term “micropyle” refers to a tiny opening or pore in the seed coats of certain plants It is an essential structure that allows for the entry of water, gases, and sometimes pollen during the process of germination
  • Micropyle - definition of micropyle by The Free Dictionary
    Define micropyle micropyle synonyms, micropyle pronunciation, micropyle translation, English dictionary definition of micropyle n 1 Botany A minute opening in the ovule of a seed plant through which the pollen tube usually enters 2 Zoology A pore in the membrane covering the ovum
  • What does micropyle mean? - Definitions. net
    A micropyle is a small opening or pore in the outer covering of a plant ovule or a seed, through which a sperm cell can access the egg for fertilization In fish and insect eggs, it is a tiny opening allowing the sperm to enter and fertilize the egg
  • Micropyle: General Biology I Study Guide | Fiveable
    The micropyle is a small opening in the ovule of seed plants through which the pollen tube usually enters during fertilization It allows the sperm cells to reach the egg cell for successful fertilization
  • micropyle - Dictionary of botany
    The small channel that remains between the tips of the integuments at the apex of the ovule The pollen tube usually enters the nucellus via the micropyle prior to fertilization The micropyle may persist as a small pore in the seed through which water is absorbed prior to and during germination





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