The arrangement of body parts in an organism is known as symmetry. Classify organisms based on symmetry.

Answers (1)

Organisms classfied on the basis of symmetry are :

1. Radial Symmetry - Radial symmetry is the arrangement of body parts around a central axis, like rays on a sun or pieces in a pie. Radially symmetrical animals have top and bottom surfaces, but no left and right sides, or front and back. Examples of radial symmetry organisms are - sea anemones , comb jellies , corals etc.

2. Bilateral Symmetry - Bilateral symmetry involves the division of the animal through a  plane, resulting in two mirror-image that is  right and left halves.Animals with bilateral symmetry have a head and tail front and back and right and left sides. Examples of  bilateral symmetry organisms are - Butterfly , crab or human body. 

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