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NEET UG BIOLOGY MCQ: CHEMICAL COORDINATION AND INTEGRATION

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I. Sleep-wake cycle, II. Body temperature,  III. Pigmentation,  IV. Metabolism,  V. Defence capability.  All of the above written activities are influenced/regulated by
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Correct option: A
Pineal gland
Option A (Pineal gland) is correct because the pineal gland secretes melatonin, which influences the sleep-wake cycle, body temperature, pigmentation, metabolism, and defense capability.

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