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Cnidarian

  1. Radial symmetry
  2. No body cavity other than gastrovascular cavity
  3. diploblastic - 2 primary layers ( endoderm and ectoderm )
  4. Unique stinging cells
  5. One opening to digestive track
  6. Hydrostatic skeleton based on gastrovascular cavity
  7. more primative

Echinoderm

  1. Radial Symmetric adults, Bilateral larvae
  2. Deuterostome developed coelom
  3. Triploblastic - 3 primary layers ( endoderm, ectoderm and mesoderm)
  4. Unique water vascular system
  5. Complete digestive track
  6. calcareous endoskeleton, supplemented by water vascular system
  7. More derived
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βˆ™ 11y ago
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Anonymous

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βˆ™ 4y ago
thanks
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None

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βˆ™ 3y ago
thansk
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None

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βˆ™ 3y ago
thanks you
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marissa kurtz

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βˆ™ 1y ago
thank you so much
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βˆ™ 12y ago

a 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

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βˆ™ 15y ago

octopuses 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!

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βˆ™ 12y ago

Because they have different cells ,cnidarians live in water ,echinoderms are animals and cnidarians are plants

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Anonymous

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βˆ™ 4y ago

are you stupid cnidarians are animals too.

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Q: What are the differences of cnidarians and echinoderms?
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What evolved first cnidarians or echinoderms?

I believe Echinoderms evolved first.


Are seahorses in the echinoderms or cnidarians group?

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Which animal is not a arthopods?

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According to the diagram below which animal class or classes have radial symmetry?

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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?

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An invertebrate is an organism that lacks a backbone. The 6 groups of invertebrates are sponges, cnidarians, worms, mollusks, echinoderms and arthropods.


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Do cnidarians have spicules?

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adda