Classes: Pisces, Amphibia, Reptilia, Aves, MammaliaIntroductionThe subphylum Vertebrata is classified into five major classes: Pisces, Amphibia, Reptilia, Aves, and Mammalia. These classes differ based on their structural and physiological…
Phylum Chordata: distinguishing featuresIntroductionPhylum Chordata includes animals that possess a notochord at some stage of their life cycle. It is the phylum that contains vertebrates, including fish, amphibians, reptiles, birds, and…
Characteristics of major phyla: Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, EchinodermataIntroductionInvertebrates are animals that lack a vertebral column (backbone). They form the majority of the animal kingdom and are classified into different phyla based on their structural…
Criteria: symmetry, segmentation, body cavity, germ layersBasis of Classification: Key CriteriaAnimals are classified based on fundamental characteristics such as symmetry, segmentation, body cavity (coelom), and germ layers. These criteria help in…
Levels of classification: kingdom, phylum, class, order, family, genus, speciesBasis of ClassificationAnimal Classification is based on structural and functional similarities.Organisms are classified based on morphology, anatomy, embryology, and genetic relationships.Two main…