| 词汇 | monocot |
| 释义 | monocot noun[ C ] biology specializeduk /ˈmɒn.əʊ.kɒt/ us /ˈmɑː.nə.kɑːt/ a plant that has one cotyledon (= a leaf part inside the seed): 单子叶植物 Sweet flag is a tall perennial wetland monocot with scented leaves.白菖蒲是一种高大的多年生湿地单子叶植物，有香味。 Synonym monocotyledon Compare dicot Trees are dicots, palms are monocots. Yams are a monocot (a plant having one embryonic seed leaf). The monocots include about 60,000 species. Types of plant acanthus air plant amaranth Andromeda angiosperm early emergent evergreen fiddlehead grower mossy mugwort mustard non-hardy non-legume spleenwort starter plug succulent sundew tenderness monocot adjective biology specializeduk /ˈmɒn.əʊ.kɒt/ us /ˈmɑː.nə.kɑːt/ having one cotyledon (= a leaf part inside the seed): （植物）单子叶的 Rice is the seed of the monocot plants Oryza sativa or Oryza glaberrima.稻米是单子植物水稻或光稃稻的种子。 Synonym monocotyledonous Compare dicot groupings of dicotyledonous (dicot), monocotyledonous (monocot) and total weeds the biomass of monocot weeds Types of plant acanthus air plant amaranth Andromeda angiosperm early emergent evergreen fiddlehead grower mossy mugwort mustard non-hardy non-legume spleenwort starter plug succulent sundew tenderness Examples of monocotmonocot The induction of seed chitinases by fungal attack has been demonstrated in some monocot species during both maturation and germination. All except one of the 72 pre-burn soil samples (99%) contained germinating dicot seed and 40 (56%) contained germinating monocot seed. The soil seed bank from the 1-y-old post-burn soil was dominated by monocots (96.5%). The great majority of whiteflies in existence today colonize only dicotyledonous angiosperms and a smaller, but significant, number feed on monocots, particularly grasses and palms. Various arborescent monocots are found scattered in the mid-storey eucalypt woodlands or as co-dominants in the canopy adjacent to wetlands. Weeds were either pooled as one group, or separated into dicots and monocots. In 1994, reference forest soils produced 422 seedlings (703 seeds m-2), 368 (87%) dicots and 54 (13%) monocots. Therefore, monocots are better able to deal with the typical water stressed habitat of the lowland canopy than dicots. Thus, in both monocot and dicot seeds, loss of dormancy was associated with a reduction in the threshold oxygen percentage. Unidentified species (monocot and dicot classes comprising 13.5% of the emerged seeds) were excluded from the analyses. This is the highly modified cotyledon of monocots that transmits hormones, produces digestive enzymes, and transports nutrients from the endosperm to the embryo. Evolution has, therefore, shaped monocot germination and endosperm mobilization into a highly regulated process. One-year post-burn soil was dominated by monocots; only 3% of the seedlings were herbs; no vines, small trees/shrubs or trees germinated. A total of 2101 seedlings (3503 seeds m-2) germinated from the 1-y post-burn pasture soils, 74 (4%) dicots and 2027 (96%) monocots. Only 14 of the 72 1-day post-burn soils (19%) contained germinating dicot seed, and none contained germinating monocot seed. See all examples of monocot These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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