单词 | antherozoid |
例句 | In germination they develop a minute prothallus which bears archegonia to be fertilized by antherozoids developed from the microspores. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z A, Male moss-flower stripped of its outer leaves, showing jointed filaments and oval sacs os and antherozoid cells zc swarming out of a sac. zc�, Antherozoid cell enlarged. z, Free antherozoid. Through Magic Glasses and Other Lectures A Sequel to The Fairyland of Science 2011-10-03T02:00:33.003Z Reproduction in the olive sea-weeds is also double, by zoospores, generally considered gemmæ, and by spores and antherozoids, which is a sexual process. Sea-Weeds, Shells and Fossils 2011-08-20T02:00:11.557Z Its extremity never opens, and we never find antherozoids; on the contrary, the antheridium presents, up to the maturity of the oospore, the appearance which it presented at the moment of fecundation. Fungi: Their Nature and Uses The upper part of the antheridium becomes separated from the parent stem by a septum, and its contents are converted into ciliated motile antherozoids. Scientific American Supplement, No. 460, October 25, 1884 The product of the union of an antherozoid and an oosphere is termed an oospore. Scientific American Supplement, No. 531, March 6, 1886 In many cases the differentiation of the sexual cells does not proceed so far as the formation of antherozoids or of distinct oospheres; these cases I shall investigate with the others in detail presently. Scientific American Supplement, No. 531, March 6, 1886 The antheridia are stalked sacs, with a single wall of cells, and the spiral antherozoids arise by free-cell formation from the cells of the interior. Scientific American Supplement, No. 531, March 6, 1886 Down this canal pass one or more antherozoids, which become absorbed into the oosphere, and this then secretes a wall, and from it grows the second or asexual generation. Scientific American Supplement, No. 531, March 6, 1886 |
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