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micropyle

NOUN
  1. minute opening in the wall of an ovule through which the pollen tube enters

How To Use micropyle In A Sentence

  • Coupling these screens with a visual assessment of seed formation has yielded mutants defective in FG development or in the ability of pollen tubes to release their sperm after entering the micropyle.
  • Only one pollen tube tip entered the nucellus through the micropyle.
  • Micropyles are marked with arrows (longitudinal in longer ovule, transverse in shorter ovule).
  • Such a method of entrance is styled chalazogamic, in contrast to the porogamic or ordinary method of approach by means of the micropyle. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
  • The outer integument remains two cell layers thick throughout development and does not contribute to the micropyle.
  • It is, furthermore, the case that the embryo sac itself also exhibits polar organization, with the egg cell and synergids adjacent to the micropyle, while the antipodal cells are found at the opposite chalazal end.
  • In a favorable situation, an opening called the micropyle appears and releases amoebocytes, which differentiate into cells of all the other types.
  • The new occident cakchiquel evasion silkwood of lockage, ledgeman from notepad tegucigalpa, warning hewer ithaca and web diplegia for micropyle. Rational Review
  • The development of the ovule, which represents the macrosporangium, is very similar to the process in Gymnosperms; when mature it consists of one or two coats surrounding the central nucellus, except at the apex where an opening, the micropyle, is left. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
  • Pollen tubes then exit the site of intercellular growth at the base of the funiculus where they continue to grow within the ovary locule along the adaxial carpel surface to finally enter the ovule micropyle.
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