Endocrine Glands
Easybiology
Which hormone is responsible for the 24-hour (diurnal) rhythm of our body?
Select the correct option:
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About This Question
- Subject
- biology
- Chapter
- chemical coordination and integration
- Topic
- endocrine glands
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Melatonin
- Gland: The pineal gland is located on the dorsal side of the forebrain.
- Hormone: It secretes the hormone melatonin.
- Circadian Rhythm: Melatonin is primarily responsible for maintaining the sleep-wake cycle and the 24-hour diurnal rhythm of the human body.
- Other Effects: It also influences metabolism, pigmentation, and defense capability.
- Conclusion: Melatonin is the rhythm-regulating hormone.
This easy difficulty biology question is from the chapter chemical coordination and integration, covering the topic of endocrine glands. It appeared in the 2025 exam.
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