Question

the tough, opaque tissue that acts as the eyes protective outer layer is called the ______.
a. lens
b. cornea
c. fovea
d. sclera

please select the best answer from the choices provided

a
b
c
d

Explanation:

Analyze the anatomical description of the eye

The question asks for the tough, opaque tissue that acts as the eye's protective outer layer.

Evaluate the given options

• Lens: A transparent, flexible structure that focuses light onto the retina.
• Cornea: The transparent front part of the eye that covers the iris and pupil, allowing light to enter.
• Fovea: A small depression in the retina where visual acuity is highest.
• Sclera: The tough, fibrous, white, and opaque outer protective layer of the eyeball.

Determine the correct match

The description "tough, opaque tissue that acts as the eye's protective outer layer" uniquely defines the sclera.

Answer:

• A. lens
• B. cornea
• C. fovea
• D. sclera (Correct answer)