Cnidarians include jellyfish and corals. Cnidarians are less complex than annelids or mollusks because the latter have gills with many layers of tissue.
very cool
it would make them less capable of capturing food
it would make them less capable of capturing food
it is none it is aan animal that lives in the sea
Shell-less mollusks include: Squids, cuttlefish, and octopuses (class Cephalopoda) Nudibranchs & slugs (class Gastropoda) A+=slug
synthesis/catabolism
Sponges are less complex because they are just made of individual cells. There is no level of organization past cells in sponges. Cnidarians, on the other hand, have tissues, a higher level of organization. Tissues allow for some forms, like box jelly fish, to have eyes (this is just one of many advantages of tissues). Cnidarians' level of organization stops there though, they have no organs (heart, brain, etc.).
Yes
They are less complex
They are less complex
No. There are different classes of mollusks. Gastropods (shell-less or single-shelled), Bivalves (2 shells held together by 1 of 2 powerful muscles), and Cephalopods (Small internal shells or no shells at all)
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They are less complex