Answer :
Characteristics of Echinoderms. Echinoderms are characterized by radial symmetry, several arms (5 or more, mostly grouped 2 left - 1 middle - 2 right) radiating from a central body (= pentamerous). The body actually consists of five equal segments, each containing a duplicate set of various internal organs. Hope this helps:)
The radial symmetry of echinoderms is a unique feature.
What is radial symmetry in echinoderm?
The radial symmetry of echinoderms is one of its most distinguishing characteristics. This means that any plane traveling through the body should be divided into two identical halves if we divide the organism around any primary axis.
This is due to the mouth being enclosed by a central disk containing particular structures called podia that extend outwards, giving the creature radial symmetry.
Ctenophores, echinoderms, sea anemones, and many sponges, for example, have radial symmetry in their bodies. Sea urchins, sea cucumbers, bitter stars, and other echinoderms feature radial symmetry.
Thus, we can conclude that the radial symmetry feature is found in the echinoderm.
You can learn more about echinoderm here:
https://brainly.com/question/14637607
#SPJ2