9. 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?

Gap-fill exercise

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

, cnidarians and flatworms
not have a system. In
nematodes is circulation of
and nutrients through pseudocoelom
fluid.