单词 | receptive spot |
释义 | > as lemmasreceptive spot receptive spot n. [after German Empfängnissfleck (E. Strasburger 1869, in Jahrb. f. wissensch. Bot. 7 418)] Botany the point at which the male gamete enters the egg cell of an alga or fern (identified as a pale spot). ΚΠ 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 344 The entrance takes place at a lighter spot of the oosphere facing the neck, which is termed the Receptive Spot. 1927 F. E. Fritsch West's Brit. Freshwater Algae (ed. 2) 46 That part of the ovum nearest the aperture commonly exhibits a colourless cytoplasmic area, the receptive spot. 1994 Cryptogamic Bot. 4 329 As many as three spermatozoids may dock at the receptive spot and rotate vigorously for a while, but only one usually enters the egg cell. < as lemmas |
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