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The eyes of a frog are protected in water by
AA nictitating membrane covering them
BAn external eyelid like in birds
CA cornea that retracts inside the eye
DThe forelimbs that cover the eyes
Answer & Solution
Correct answer: A. A nictitating membrane covering them
The nictitating membrane (a translucent third eyelid) protects frog eyes from water and debris while still allowing some vision. The bulged eyes have no external eyelids.
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