Whales and dolphins have evolved their sleep patterns so they

A) don't need to breathe at night.
B) only sleep in half of their brains at a given time.
C) sleep 20 hours per day during the first month of life.
D) shut down brain activity while sleeping to save energy when they don't sense danger.

Question

Raghad Ahmed · Accepted Answer

Final Answer : B, Explanation :  Whales and dolphins have evolved to only sleep with half of their brain at a time, allowing them to continue swimming, surfacing to breathe, and remain alert to potential predators. This is known as unihemispheric slow-wave sleep.

Whales and dolphins have evolved their sleep patterns so they

A) don't need to breathe at night.
B) only sleep in half of their brains at a given time.
C) sleep 20 hours per day during the first month of life.
D) shut down brain activity while sleeping to save energy when they don't sense danger.

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Learning Objectives

Related questions

Whales and dolphins have evolved their sleep patterns so theyA) don't need to breathe at night.B) only sleep in half of their brains at a given time.C) sleep 20 hours per day during the first month of life.D) shut down brain activity while sleeping to save energy when they don't sense danger.

Definitions

Learning Objectives

Learning Objectives

Related questions

Whales and dolphins have evolved their sleep patterns so they

A) don't need to breathe at night.
B) only sleep in half of their brains at a given time.
C) sleep 20 hours per day during the first month of life.
D) shut down brain activity while sleeping to save energy when they don't sense danger.