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Question

Assertion: A sigmoid curve is characteristic of plants growing in the natural environment.

Reason: In natural conditions generally food and space start to act as limiting factors.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

In plants growing naturally, a sigmoid growth curve is seen. Growth consists of a lag phase, a log phase, and a stationary phase. During the lag phase, the growth of the plant is slow, during the log phase or exponential phase, the plant growth increases rapidly and during the stationary phase, the growth rate decreases again due to the limitation of nutrients i.e food and space start to act as limiting factors.

So, the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.


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