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Cnidarian
- Radial symmetry
- No body cavity other than gastrovascular cavity
- diploblastic - 2 primary layers ( endoderm and ectoderm )
- Unique stinging cells
- One opening to digestive track
- Hydrostatic skeleton based on gastrovascular cavity
- more primative
Echinoderm
- Radial Symmetric adults, Bilateral larvae
- Deuterostome developed coelom
- Triploblastic - 3 primary layers ( endoderm, ectoderm and mesoderm)
- Unique water vascular system
- Complete digestive track
- calcareous endoskeleton, supplemented by water vascular system
- More derived
Wiki User
∙ 10y ago
Anonymous
None
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marissa kurtz
Wiki User
∙ 12y agoa cnidarians tentacles have stinging cells that help catch prey and cephalopods shoot water the opposite way to go foward and backward and stuff and btw fyi IM 11
Wiki User
∙ 15y agooctopuses have legs that have suction cups while cnidarians don't have legs they have stinging tentacles and they don't have brains and octopuses brains are very large!
Wiki User
∙ 11y agoBecause they have different cells ,cnidarians live in water ,echinoderms are animals and cnidarians are plants
Anonymous
are you stupid cnidarians are animals too.
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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
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 groups of animals have radial symetry?
Echinoderms (ex: starfish), cnidarians (ex: jellyfish) and and some vermiforms have longitudinal radial symmetry.
What cnidarians that are motile?
By swimming using tentacles
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
Describe the main differences between the polyp form of the cnidarians and the medusa form?
adda
What is example of echinoderms?
Echinoderms can only be found in water, as they are aquatic. Some characteristics of Echinoderms are: Hard Skin, have arms or spines, have 5 body parts, organs found towards centre of body. Examples: Star Fish, Sea Cucumber, Sea Urchin
