Which of the following is not a response to light?
A
Closing of plant leaves due to a sudden flash of light.
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B
Gathering of insects around a glowing street lamp.
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C
Mimosa plant closing it's leaves when we touch it.
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D
A potted plant growing towards sunlight.
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Solution
The correct option is C Mimosa plant closing it's leaves when we touch it. ∙ Leaves of mimosa plant folds up in response to touch and not light. ∙ The leaves reopen in few minutes, and it is thought that this adaptation is a defense against grazing herbivores who may be startled by the movement. ∙ It is also commonly known as the touch-me-not plant.