| 单词 | exogen |
| 例句 | Cambium, kam′bi-um, n. a layer of vascular tissue formed between the wood and the bark of exogens, in which the annual growth is formed. Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) 2011-10-11T02:01:08.990Z Palms were intermediate, filling the spaces between them, but the palms stood under the exogens, growing in alcoves of the mass, rising no higher than the beginning of the branches and foliage of their lords. The Sea and the Jungle 2011-08-30T02:00:30.350Z If perfect plants, I apprehend the periodical rings, the distinctive mark of the exogens, would, by natural laws, be wanting; but, I suppose, added in the plants proceeding from the parent stem. The Bible: what it is 2011-05-31T02:00:29.687Z They are to be found in all exogens. Wood and Forest 2011-03-01T03:00:42.647Z Since all the stems with which we have to deal are exogens, a particular description of that class will here be given. Trees of the Northern United States Their Study, Description and Determination Professor Huxley is credited with the assertion that the primrose is "a corollifloral dicotyledonous exogen, with a monopetalous corolla and a central placenta." English as She is Wrote Showing Curious Ways in which the English Language may be made to Convey Ideas or obscure them. Clumps of palms threw their fronds above the forest roof in some places, or a giant exogen raised a dome; but that was all. The Sea and the Jungle 2011-08-30T02:00:30.350Z There are plants normally of an intermediate character, while, to take exceptional instances, there are exogens with the leaves and flowers of endogens, and endogens whose outward organisation, at any rate, assimilates them to exogens. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants You must know before anybody else how the exogens are to be completely divided. Hortus Inclusus Messages from the Wood to the Garden, Sent in Happy Days to the Sister Ladies of the Thwaite, Coniston Smilax belongs to a transition class, partaking somewhat of the nature of endogen and of exogen. Scientific American Supplement, No. 623, December 10, 1887 Phanerogamic plants in their lowest groups of gymnosperm exogens then begin to appear in the Devonian conifers, gradually followed by cycads. Creation and Its Records Cannot a man work in wood without knowing all about endogens and exogens, or must he attend Professor Gray's Lectures before he can be trusted to make a box-trap? Medical Essays, 1842-1882 The former sees a tree in all its glory, where the latter sees an exogen with a pair of cotyledons. The Unseen World and Other Essays And it is not till Cainozoic times that we have the endogenous grasses and palms and angiospermous exogens. Creation and Its Records |
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