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
flatworms are the only triploblastic organisms that lack a coelom
yes it do hav a true body cayity or a coelom.
It was appeared in nematodes.Annelides had first true coelom.
No, a flatworm does not have a body coelom.
The pericardial cavity is the coelom of a common freshwater clam Anodonta.
alimentary canal
As protostome phyla evolve, the coelom may change in structure and function. For example, in some phyla like annelids, the coelom functions as a hydrostatic skeleton. In arthropods, the coelom may be reduced or lost altogether.
True coelom is body cavity lined by mesothelium on both sides as in chordates .