词汇 | geotropism |
释义 | geotropism noun[ U ] biology specializeduk /ˌdʒiː.əʊˈtrəʊ.pɪ.zəm/ us /ˌdʒiːoʊˈtroʊ.pɪ.zəm/ us /dʒiːˈɑː.trə.pɪ.zəm/ the way plants or plant parts react to gravity向地性 Animal & plant biology - general words abiotic anatomic anatomical anatomically correct anti-Darwinian biologist biophysics Darwinist entomological entomologist entomology eukaryote experiment station naturalist overstimulate overstimulated overstimulation photosynthetically poikilothermic survival of the fittest Compareheliotropism Examples of geotropismgeotropism The mygalomorphs that do balloon express a level of negative geotropism that is not expected to be present elsewhere in the lineage. It is this negative geotropism and positive phototactic behaviour which may distinguish ballooning lepidopterans from the primitive non-ballooning lineage. Germination of embryos was defined as extension and positive geotropism of the radicle. Darwin also drew attention to the similarities between animals and plants, e.g., sensitivity to touch (thigmotropism), light sensitivity (phototropism), and gravity (geotropism). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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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