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sandworm
Chuck Versus the Sandworm was created on 2007-10-29.
Nematoda
No, it isn't.
nope
Coelom. It is partitioned by septa, which is a divider between segments of the worm.
Yes, flatworms do not have a true coelom. They have a solid body structure without a cavity between their gut and body wall, which distinguishes them as acoelomates.
A sandworm has bilateral symmetry, which means it has one line of symmetry that divides it into two equal halves. This line of symmetry runs from its head to its tail.
Frogs have a coelom, a body cavity that houses their internal organs. Organs found in a frog's coelom include the heart, lungs, liver, stomach, and intestines. The coelom provides a space for these organs to function and enables flexibility in movement.
It was appeared in nematodes.Annelides had first true coelom.
No, a flatworm does not have a body coelom.
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.