Characters of a phylum are given below . Read them carefully and answer the question : (a) Spines of calcium carbonate are present on the body . (b) These animals are exclusively marine. (c) They perform the locomotion with the help of tube -feet . (d) Their skeleton is made up of calcareous plates or spicules. These animals can be classified with the help of which criteria of new system of animals classification.

Characters of a phylum are given below . Read them carefully and answe

1.	Characters of a phylum are given below . Read them carefully and answer the question : (a) Spines of calcium carbonate are present on the body . (b) These animals are exclusively marine. (c) They perform the locomotion with the help of tube -feet . (d) Their skeleton is made up of calcareous plates or spicules. These animals can be classified with the help of which criteria of new system of animals classification.
Answer» Solution :ANIMALS are clssified on the BASIS of CRITERIA such as BODY organization , body symmetry ,body CAVITY , etc.