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I believe Echinoderms evolved first.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoflatworms
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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.
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
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
In what time period did cnidarians evolve?
The Cnidarian classification group evolved in about 1824.
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
Why are echinoderms thought to have evolved from bilaterally symmetrical ancestors?
because in their larval stage they are bilaterally symmetrical.
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
