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amm1812
3 years ago
11

Describe the symmetry in members of phylum echinodermata?

Biology
1 answer:
Gre4nikov [31]3 years ago
3 0

Answer: Bilateral Symmetry

Explanation:

Echinoderms evolved from bilateral symmetric species.

Even though adult echinoderms have five-sided or pentaradial symmetry, echinoderm larvae are ciliated, free-swimming species that form in bilateral symmetry making them look like embryonic chordats. Example of echinodermata is starfish.

Bilateal symmetry allows them to move anywhere in the water. That when a predator is trapped by 2 arms, the other arms can be used effectively by continuously placing pressure on the body part to pressurerise the animal to open.

Hence, phylum echinodermata have bilateral symmetry.

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