First slide

Classification of Animals

Question

Cnidarians are advanced over sponges by the presence of

Easy

A

Larval stage
B

Sexual reproduction
C

Division of labour
D

Tissues

Solution

In sponges, the cells are arranged as loose cell aggregates (cellular level of organisation). Cnidarians exhibit tissue level of organisation. Both sponges and cnidarians exhibit indirect development. Sponges also reproduce sexually. Division of labour occurs among the cells in sponges also.

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