Question

What is body symmetry? Explain.

Answer 1

• The property by which an imaginary plane or planes can divide an animal into two or more equal halves is called symmetry.
• When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. (1 Mark)
• Animals in which the body can be divided into identical left and right halves along just one plane, exhibit bilateral symmetry. (1 Mark)
• Animals in which the body cannot be divided into identical left and right halves along any plane, are called asymmetrical organisms. (1 Mark)