Question

Write distinguishing characters of class Crustacea.

Answer 1

these are the characters of class crustacea

   The head has two compound eyes, two pairs of antennae, and three pairs of mouthparts.

   A pair of green glands excrete wastes near the base of antennae.

   The abdominal segments have swimmerets (swimming legs)

   A hard exoskeleton made of calcium - no internal skeleton.