Question

Unihemispheric sleep is the sleeping patterns in which

• A. Animal sleeps for five hours
• B. Sleep with just one-half of their brain, while the other half remains alert for predators
• C. Animals hibernate
• D. Animals aestivate

Answer 1

The correct option is B Sleep with just one-half of their brain, while the other half remains alert for predators

In Unihemispheric sleep, also known as asymmetric slow-wave sleep, one half of the brain is in deep sleep, a form of non-rapid eye movement sleep and the eye corresponding to this half is closed while the other eye remains open. It keeps the organism alert for predators.

So, the correct option is B.