Hair Is a Character Shared by All Mammals,but Not Found

question 2

Multiple Choice

Hair is a character shared by all mammals,but not found in their ancestral lineage.Hair is therefore considered to be a(n)

• A)clade.
• B)shared ancestral character (trait).
• C)shared derived character (trait).
• D)analogous structure.

---

Definitions:

Optic Nerve

The nerve that transmits visual information from the retina to the brain, playing a critical role in vision.

Lens

A transparent, flexible structure in the eye that focuses light onto the retina, allowing for clear vision.

Pupil

the circular opening in the center of the eye’s iris that regulates the amount of light reaching the retina.

Fovea

The fovea is a small depression in the retina where visual acuity is highest, responsible for sharp central vision, crucial for activities like reading and driving.