First slide

Classification of Animals

Question

Evolutionarily, sexual dimorphism is first exhibited by

Easy

A

Annelida
B

Arthropoda
C

Aschelminthes
D

Platyhelminthes

Solution

Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics morphologically apart from internal sex organs. It is observed first in Aschelminthes.

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