Question

Any 5 difference between dog fish and star fish.

Answer 1

DOG FISH
          It has notochord
          It is bilaterally symmetrical 
          Its exoskeleton is made of scales 
          It belongs to phylum CHORDATA
          It has fins and tail for movement
          
STAR FISH
           It is not having notochord
           It is radially symmetrical
           Its exoskeleton is made of hard calcium carbonate
           It belongs to phylum ECHINODERMATA
           It has water driven tube system for movement .
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