Answer:
Body symmetry
is the similarity of body parts in different region and directions of the body plan.
In radial symmetry,
body of an individual can be divided into equal halves by any plans passing
through the longitudinal axis. (e.g., Coelentrates, Ctenophores, Echinoderms.
In bilateral
symmetry, body can be divided into two equal halves when the plane passes through
the median longitudnal or saggital axis. (e.g., Annelids, Arthropods)
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