Akey feature of animal body plans is that they can show multiple types of symmetry. for example , while a jellyfish and other cnidarians would represent

A jellyfish and other cnidarians would represent radial symmetry.

Explanation:

In biology, symmetry can be described as the overall shape of the body of an organism.

Radial symmetry can be described as the symmetry which depends upon a central axis. For example, the body of cnidarians.

Bilateral symmetry can be described as a type of symmetry in which the two halves of the body are mirror images to one another. Examples of bilateral symmetry include the body of humans, dogs etc.  

they are known to reach a speed of 21 miles per hour

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