单词 | 向性 |
释义 | 〔reagin〕A substance present in the blood of individuals having a positive serological test for syphilis.梅毒反应毒:个体血液中的一种物质,可对梅毒产生向性血清反应〔geotropism〕The growth of a living organism in response to gravity, as the downward growth of plant roots.对于地心引力的向性:有机体的生长对地心引力的向性,如植物根部向下长〔geotaxis〕Movement of a motile organism using the earth's gravity for orientation.趋地性:生物以地球重力为定向因素的向性〔tropism〕The turning or bending movement of an organism or a part toward or away from an external stimulus, such as light, heat, or gravity.向性,向性运动:生物体或其一部分做的趋向或远离外部刺激(如光、热、重力)的运动 |
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