First slide

Classification of Animals

Question

Which one of the following is not characteristic of phylum Annelida?

Easy

A

Segmentation
B

Mesodermal pouches between ectoderm and endoderm
C

Ventral nerve cord
D

Closed circulatory system

Solution

When the body cavity is not lined by mesoderm and instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm. Such a body cavity is called pseudocoelom. It is observed in members of Aschelminthes.
Annelida possess segmentation, closed circulatory system and ventral nerve cord.

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