Multiple choice

How are sharks and rays different from other fish?

  1. They have eyelids

  2. Their bones are made of cartilage

  3. They are warm blooded

  4. They give birth to live young

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sharks and rays are cartilaginous fish (Chondrichthyes), meaning their skeletons are made of cartilage rather than bone.