Question

Mention the characteristics taken as the basis for the classification of animals.​

Answer 1

Characteristics taken as the basis for the classification of animals are:​

• The levels of organisation of the body.​

• The body symmetry. ​

• The number of germ layers.​

• The presence or absence of the coelom (body cavity).​

• Presence or absence of segmentation in the body.​

• The presence or absence of the notochord.​