Multiple choice general knowledge

Which of this don't have brains?

  1. Squirrels

  2. Starfish

  3. Squid

  4. Snail
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Starfish (sea stars) do not have a centralized brain like vertebrates. Instead, they have a decentralized nerve ring and radial nerves running through each arm. While squirrels and squids have brains, and snails have neural ganglia, starfish lack a true brain.

Keep practicing — related questions