First slide

Classification of Animals

Question

Which of the following animal groups is not correctly paired with its characteristic?

Moderate

A

Arthropoda - Chitinous exoskeleton
B

Mollusca - Exoskeleton is absent
C

Echinodermata - Excretory system is absent
D

Hemichordata - Respiration through gills

Solution

Molluscs have a calcareous shell (which represents their exoskeleton).

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