Question

Define phototropism, geotropism, hydrotropism, and chenotropism...​

Answer 1

Answer:

• phototropism

the orientation of a plant or other organism in response to light, either towards the source of light .

• geotropism

the growth of the parts of plants in response to the force of gravity. The upward growth of plant shoots is an instance of negative geotropism ; the downward growth of roots is positive geotropism.

• hydrotropism

the growth or turning of plant roots towards or away from moisture.

• chemotropism

The growth or movement of a plant or plant part in response to a chemical stimulus. An example is the growth of a pollen tube down the style during fertilization in response to the presence of sugars in the style. 

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