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The NICTITATING MEMBRANE in frogs is best described as:

AA muscular vibrating tissue for hearing
BA specialised tongue tip for capturing prey
CA scale-like covering of dorsal skin
DA transparent third eyelid for eye protection
Answer & Solution
Correct answer: D. A transparent third eyelid for eye protection
The nictitating membrane is a TRANSPARENT THIRD EYELID found in frogs (and many other animals). It moves horizontally across the eye, protecting it (especially underwater) while preserving vision.
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