Question

Q.21How are animals classified into different groups according to their body plan? `​

Answer 1

Answer:

The animals are classified into the following groups according to their body plan : ... There is least division of labour in cell aggregate body plan. >> Tissues or organs and digestive system are absent.

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Answer 2

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A very basic level of classification, true animals can be largely divided into three groups based on the type of symmetry of their body plan: radially symmetrical, bilaterally symmetrical, and asymmetrical. ... It results in animals having top and bottom surfaces but no left and right sides, or front or back.