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    				| 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. Give an example from that phylum. | 
                            
| Answer» SOLUTION :STARFISH , brittlestar, SEA URCHIN. | |