First slide

Classification of Animals

Question

Which of the following has a calcareous skeleton?

Moderate

A

Obelia
B

Aurelia
C

Meandrina
D

Taenia

Solution

Some of the cnidarians, e.g., corals have a skeleton composed of calcium carbonate. Meandrina is the brain coral.
Obelia and Aurelia are also cnidarians but do not have a calcareous skeleton.
Taenia is a flatworm.

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