Multiple choice

____ is a secretion of the skin, which seeps between the scales and makes the body slippery.

  1. Fur

  2. Slime

  3. Bone

  4. Muscle

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

Fish secrete a mucus-like substance called slime from their skin. This layer reduces friction in water and protects the fish from parasites and bacteria.