First slide

Basis of Classification

Question

Select the option including all triploblastic animals.

Easy

A

Sea anemone, sea fan, sea pen
B

Starfish, devilfish, jellyfish
C

Tapeworm, hookworm, earthworm
D

Sea horse, sea hare, sea walnut

Solution

Tapeworm (Platyhelminthes), hookworm (Aschelminthes), earthworm (Annelida) are all triploblastic.
Cnidarians (e.g., sea anemone, sea fan, sea pen and jelly fish) and ctenophores (sea walnut) are diploblastic.

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