What is meant when it is said that beings of the phylum Annelida are vascular beings? From which other phyla of the animal kingdom does this feature differentiate them?

1 year ago
Biology

The classification of these beings as vascular beings means that they have a circulatory system, with vessels that distribute substances throughout the body.

Poriferans, cnidarians and flatworms do not have a circulatory system. In nematodes there is circulation of gases and nutrients through the pseudocoelom fluid.

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Dipti KC
May 13, 2023
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