How can we expalin stimulus of touch in plant?
Answers
Answer
Explanation:
Plants respond to their environment in a variety of ways. The response of an organism,
usually a plant, to an environmental stimulus is called a tropism. Some common plant
stimuli include light, gravity, water, movement of the sun, and touch. The naming of
the tropism is associated with the stimulus. For example, the movement of plant roots
towards water is called hydrotropism. See the vocabulary list for more examples. The
movement away from a stimulus is called a negative response, and the movement
towards the stimulus is a positive response. For example, roots exhibit a positive
response to gravity, while stems exhibit a negative response.
It is important that plants are anchored in soil to absorb water and nutrients. When
a plant has been disturbed by an animal, or flipped over by the wind, researchers
have determined that the roots and stems of a plant can respond within one minute.
Additionally, researchers have determined that plants can distinguish between
gravitational and mechanical disturbances.