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Cnidarians, such as jellyfish and corals, are characterized by their radial symmetry, soft bodies, and the presence of specialized stinging cells called cnidocytes. Echinoderms, including starfish and sea urchins, exhibit radial symmetry as well but possess a hard, calcareous endoskeleton and a unique water vascular system for movement and feeding. While both groups share a marine habitat and exhibit radial symmetry, they differ significantly in their body structure, locomotion, and feeding mechanisms.
What else can I help you with?
What evolved first cnidarians or echinoderms?
I believe Echinoderms evolved first.
Are seahorses in the echinoderms or cnidarians group?
Cnidaria
Which animal is not a arthopods?
Sponges, Cnidarians, Mollusks, and Echinoderms are not Arthropods.
According to the diagram below which animal class or classes have radial symmetry?
Cnidarians and echinoderms
Do cnidarians have spicules?
No, cnidarians do not have spicules. Spicules are small, needle-like structures made of calcium carbonate or silica that are found in some sponges and echinoderms for support and defense. Cnidarians, such as jellyfish and corals, have a different type of support structure called a mesoglea.
What are some resources from the ocean floor?
fish, mollusks, worms, crustaceans, echinoderms, sponges, tunicates and other cnidarians
Which animal has radial symmetry?
Cnidarians are true radially symmetrical animals. They include jellyfish. Echinoderms (like starfish) also display radial symmetry. It is important to note that the larvae of echinoderms are bilaterally symmetrical and that Echinoderms evolved from a bilaterally symmetrical group.
What cnidarians that are motile?
By swimming using tentacles
What groups of animals have radial symetry?
Echinoderms (ex: starfish), cnidarians (ex: jellyfish) and and some vermiforms have longitudinal radial symmetry.
What are all of the invertibrate groups?
An invertebrate is an organism that lacks a backbone. The 6 groups of invertebrates are sponges, cnidarians, worms, mollusks, echinoderms and arthropods.
Is a lobster a cnidarian?
no, it is a vegetarian: D
What are the differences of cnidarians and echinoderms?
CnidarianRadial symmetryNo body cavity other than gastrovascular cavitydiploblastic - 2 primary layers ( endoderm and ectoderm )Unique stinging cellsOne opening to digestive trackHydrostatic skeleton based on gastrovascular cavitymore primativeEchinodermRadial Symmetric adults, Bilateral larvaeDeuterostome developed coelomTriploblastic - 3 primary layers ( endoderm, ectoderm and mesoderm)Unique water vascular systemComplete digestive trackcalcareous endoskeleton, supplemented by water vascular systemMore derived
