MAHARASHTRA Class 10 Biology Animal Classification
Basis of Classification of Animals
Basis of Classification of AnimalsNonchordates - Acoelomates
The four nonchordate phyla that include acoelemates are porifera, coelenterata platyhelminthes, and nematoda.
Platyhelminthes or flatworms are dorsoventrally flattened, and Nematode or roundworms are pseudocoelomates.
Sponges are asymmetrical with cellular level of organization, while coelenterate are radially symmetrical.Nonchordates - Coelomates
The four nonchordate phyla that include coelomates are Annelida, Arthropoda, Mollusca, and Echinodermata.
Annelids includes segmented worms whereas, arthropods are organisms with jointed legs.
Phylum mollusca are characterized by soft bodied organisms, while echinoderms are marine animals with spiny skin.Vertebrates
There are five types of vertebrates namely, Pisces, Amphibia, Reptilia, Aves and Mammalia.
Pisces or fishes are aquatic organisms that breathe through gills whereas amphibians are found both in water and on land.
Pisces, amphibians, and reptiles are cold-blooded, whereas mammals and birds are warm-blooded organisms.
