英语词汇heliotropism的意思翻译、用法及例句-英汉词典-京师网

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词汇	heliotropism
释义	heliotropism noun [ U ] biology specialized /ˌhiː.liˈɒt.trə.pɪ.zəm/ /ˈhiː.li.ə.troʊ.pɪ.zəm/ 向日性 the growth or movement of a plant, or of a particular part of a plant, towards the sun or away from it Sunflowers in the bud stage exhibit heliotropism. 含苞待放的向日葵表现出向日性。 Heliotropism is like a plant sense; the way that a plant senses the sun and grows toward it. 更多例句 Geotropism and heliotropism cause roots to strike into the earth and leaves to turn to the light. He has performed experiments in heliotropism, clearly establishing the power of light in lower forms of organisms. Where a plant exhibits positive heliotropism, the part away from the light attains a greater length than that towards it. Compare: geotropism
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