If you are given a specimen, what are the steps that you should follow to classify it?

Explanation

The following features are used as the basis of animal classification:
(1) Level of organization : Identify the level of organization like cellular, tissue , organ or organ system level of organization.
(2) Body symmetry : Identify if the animal is asymmetrical, radially or has bilateral symmetry.
(3) Diploblastic of triploblastic : Based on the presence of number of the embryonic layers.
Diploblastic : Two embryonic layers as an external ectoderm and an internal endoderm.
Triploblastic : Three embryonic layers as external ectodrm, middle mesoderm and an inner endoderm.
(4) Body cavity : Presence or absence of body cavity .Animals possessing coelom are called coelomates. Animals in which body cavity is absent are called acoelomates.
(5) Segmentation : Some animals show segmentation of body externally or internally.
(6) Presence of notochord : Chordates are animals with notochord and non -chordates are ones which don't form notochord during embryonic development.