Yes, birds have a body cavity or coelom. Mammals have two separate body cavities (peritoneal / abdominal and thoracic/ chest) but birds do not have a diaphragm, and so have only one cavity.
it does not have a coelom.
Coelom. It is partitioned by septa, which is a divider between segments of the worm.
The coelom is lined with epithelium.
ns present in the coelom
yes it do hav a true body cayity or a coelom.
flatworms are the only triploblastic organisms that lack a coelom
No, a flatworm does not have a body coelom.
It was appeared in nematodes.Annelides had first true coelom.
The pericardial cavity is the coelom of a common freshwater clam Anodonta.
alimentary canal
True coelom is body cavity lined by mesothelium on both sides as in chordates .
No