Multiple choice general knowledge

A scallop has -- eyes and they are all blue.

  1. 20

  2. 25

  3. 30

  4. 35
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Scallops possess an extraordinary visual system with up to 200 simple eyes arranged along their mantle. All of these eyes appear blue due to the structure of their retinas, making them unique among bivalves.

Keep practicing — related questions