Question

Опу ШС апаЅ СаПЕИ ПЕТеUTopS!
4. Mention two ways in which plants respond to stimuli
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Answer 1

Answer:

1.'Touch me not Plant' show movement of leaves when we touch it.

2.Tropic movement.

3.Nasty movement.

Answer 2

Answer:

A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.

Plants are known to respond to a number of external stimuli like light, gravity, touch, chemicals, etc. Plants respond to the external factors with the help of receptors and hormones. The receptors help the plants to sense the external stimulus and act accordingly.