First slide

Classification of Animals

Question

Skeleton is made of calcium carbonate in all the following, except

Moderate

A

Meandrina
B

Pinctada
C

Sycon
D

Periplaneta

Solution

Periplaneta (Arthropoda) has a chitinous exoskeleton.
Meandrina (coral), Pinctada (shell), Sycon (spicules) have a skeleton made of calcium carbonate.

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