True coelom appeared first in the course of evolution in - Vidyadip

MCQ

True coelom appeared first in the course of evolution in

A
Aschelminthes
B
Chordata
C
Echinodermata
✓
Annelida

✓

Answer

Correct option: D.

Annelida

d
(d)True coelom is lined by peritonium, which formed by splitting of mesoderm called schizocoelom and found in Arthropoda, Annelida and mollusca.

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