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Radial symmetry is found in
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Types of animals on the basis of symmetry:
a. Asymmetrical - No particular symmetry.
Examples - Most of the sponges.
b. Radially symmetrical - When any plane passing through the central axis of the body divides the organism into 2 equal halves.
Examples - Few sponges, coelenterates, ctenophores and adult echinoderms.
c. Bilaterally symmetrical - If the body of an organism is divisible into 2 equal halves only in one plane.
Examples - Platyhelminthes, aschelminthes, annelids, arthropods, molluscs, echinoderms and chordates.
a. Asymmetrical - No particular symmetry.
Examples - Most of the sponges.
b. Radially symmetrical - When any plane passing through the central axis of the body divides the organism into 2 equal halves.
Examples - Few sponges, coelenterates, ctenophores and adult echinoderms.
c. Bilaterally symmetrical - If the body of an organism is divisible into 2 equal halves only in one plane.
Examples - Platyhelminthes, aschelminthes, annelids, arthropods, molluscs, echinoderms and chordates.
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