Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).
它可影
向
性和背地性生长。
Auxins influence the growth of stems toward light (phototropism) and against the force of gravity (geotropism).
它可影向性和背地性生长。
The microorgan-isms employed include mainly chemical conversion bacteria,phototropic bacteria and alga.
所利用生物体主要包括：化学转化细菌、向性细菌和藻类。
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