The animals that developed the following features for the first time are grouped under the phylum -

1). True coelom

2). Segmentation

3). Locomotory organs

Cnidaria

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Platyhelminthes

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Aschelminthes

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Annelida

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Solution

The correct option is D
Annelida

The animals that developed the features of true coelom, segmentation and locomotory organs for the first time are grouped under the phylum Annelida. These developments served to attain complexity in body organisation and to help them move in search of food, instead of parasitism and predation.

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Similar questions

The animals that developed the following features for the first time are grouped under which phylum?

1) True coelom

2) Segmentation

3) Locomotory organs

Phylum	Level of organization	Symmetry	Coelom	Segmentation	Circulatory system	Digestive system	Respiratory system
???	Organ system	Bilateral	Coelomate	Present	Present	Complete	Absent

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