Which of the following statements about melatonin is incorrect?
Melatonin secretion increases at night and decreases during the day.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
#sleep regulation
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Which gland secretes melatonin, a hormone involved in regulating sleep cycles?
The pineal gland secretes melatonin, which helps regulate the sleep-wake cycle.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Which of the following hormones plays a role in regulating biological rhythms?
Melatonin, secreted by the pineal gland, regulates sleep-wake cycles and biological rhythms.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Which of the following is an incorrect statement regarding melatonin?
Melatonin secretion increases during the night and decreases during daylight hours.
Ref: NCERT Class 11 Biology Chapter 19: Chemical Coordination and Integration Pineal Gland and Thyroid Gland
Which part of the brain regulates circadian rhythms in humans?
The hypothalamus regulates circadian rhythms by controlling the sleep-wake cycle.
Ref: NCERT Class 11 Biology Chapter 18: Neural Control and Coordination Central Nervous System - Brain - Forebrain
