Which of the Following Are Unique to Mammals and the Most

question 88

Multiple Choice

Which of the following are unique to mammals and the most recent common ancestor of mammals but lacking in nonmammals?

• A) fur and teeth
• B) fur and mammary glands
• C) mammary glands and teeth
• D) teeth and an opposable thumb

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Definitions:

Myelin Sheath

A fatty covering that surrounds and insulates nerve fibers, speeding up the transmission of nerve impulses.

Neural Impulses

Electrical impulses moving through neurons that convey data across the nervous system.

Frequency

The rate at which a repeating event occurs over a set period, often measured in cycles per second or hertz in the context of waves or vibrations.

Threshold

The minimum level of stimulus intensity required for an individual to perceive a sensation or produce a response.