What is an extra characteristic unique to mammals?
Understand the Problem
The question is asking to identify a unique characteristic of mammals from the given options. It requires knowledge of biological traits that are specific to mammals compared to other animal groups.
Answer
Three middle ear bones: malleus, incus, stapes.
An extra characteristic unique to mammals is the presence of three middle ear bones: the malleus, incus, and stapes.
Answer for screen readers
An extra characteristic unique to mammals is the presence of three middle ear bones: the malleus, incus, and stapes.
More Information
Mammals are the only animals that have evolved a system of three bones within the middle ear. These bones enhance the ability to hear a wider range of sounds, which is beneficial for survival.
Sources
- ADW: Mammalia: INFORMATION - Animal Diversity Web - animaldiversity.org
- Mammal - Wikipedia - en.wikipedia.org
- The Eight Main Characteristics of Mammals - ThoughtCo - thoughtco.com
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