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Radial symmetry is selectively advantageous because the organisms approach their environment from all sides equally. In addition to sessile animals, radial symmetry can also be found in some other animals and plants.

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9y ago
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12y ago

Sessile and free-floating animals such as echinoderms and cnidarians exhibit two distinct advantages of radial symmetry. Primarily, radial symmetry allows for animals to reach out in all directions from one center such as during feeding. This is an advantage since they don't have a high degree of controllable movement even during food collecting periods. Secondarily, radial symmetric animals are able to receive stimuli from all directions which have efficient defense mechanisms due to their radial symmetric distribution.

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Zekiwos Guluma

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3y ago

It is selectively advantageous because they approach their environment from all sides equally.

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Q: Selective advantage of radial symmetry for sessile and free floating animals?
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