Question

what is stumuli and where it is found in plants?



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Answer 1

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In physiology, a stimulus (plural stimuli or stimuluses) is a detectable change in the physical or chemical structure of an organism's internal or external environment.

Although stimuli commonly cause the body to respond, it is the CNS that finally determines whether a signal causes a reaction or not.

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Answer 2

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Stimuli is something that incites to action or exertion or quickens action, feeling, thought, etc

Plants can also respond to stimuli but the response is usually slower than that of animals. Receptors are specialised cells that detect a stimulus. Some receptors can detect several different stimuli but they are usually specialised to detect one type of stimulus: light - photoreceptors in the eye.

Plants produce hormones in response to external stimuli. They exhibit this by tropism in which they grow towards sources of water and light. In positive tropism, plants grow in the direction of stimulus and in negative tropism plants grow in the direction opposite to stimulus.

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