Assertion :Development is the sum of growth and differentiation. Reason: Development in plants is under the control of extrinstic factors only.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Growth, differentiation and development are closely related events in the life of a plant. Development is sum of growth and differentiation. Development in plants is under control of both intrinsic and extrinsic factors. Intrinsic factors include intracellular genetic factors and (intercellular factors growth regulators). Extrinsic factors are light, temperature, water, oxygen and nutrition, etc.

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