alleryMelatonin plays an important role in regulating a rhythm of what length?
ATwenty-nine hours
BThirty-four minutes
CThirty-nine minutes
DTwenty-four hours
Answer & Solution
Correct answer: D. Twenty-four hours
1. Melatonin comes from the pineal gland.
2. It governs the daily cycle of sleeping and waking.
3. Melatonin plays a very important role in the regulation of a 24-hour rhythm of our body.
4. So the answer is twenty-four hours.
_Source: syllabus Biology, Ch 19 'Chemical Coordination and Integration'_
Keep practising Neural Control and Chemical Coordination
Browse all Neural Control and Chemical Coordination questions for Kerala DHSE Plus One, or explore more Biology topics.
Related questions
The two cerebral hemispheres are joined by a fibre tract called the:The brain is protected inside the skull by three membranes called:Which type of synapse is faster but rare in humans?Junctions through which an impulse passes from one neuron to the next are:When the membrane's polarity flips at a stimulated site, it is said to be:The potential difference across a resting neuron membrane is the:The sodium-potassium pump moves 3 sodium ions out for every ___ potassium ions in.At rest, the axon membrane is more permeable to: