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Phylum - Chordata, ●, , ●, , Organ system level of organisation, Bilaterally symmetrical, triploblastic, and coelomate, animals, , ●, , Notochord, , ●, , Dorsal hollow nerve cord, , ●, , Paired pharyngeal gill slits, , ●, , Closed circulatory system, , ●, , Post anal tail

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Class- Amphibia, ●, , Aquatic as well as terrestrial form, , ●, , Two pair of limbs, , ●, , Moist skin (Without Scales), , ●, , Eye have eyelids, , ●, , Tympanum represent the ear, , ●, , Cloaca, , ●, , Three chambered heart, , ●, , Respiration - Gills, lungs,skin, , ●, , Fertilization is external, , ●, , Eg: Bufo, Rana, Salamandara, ichthyophis

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Class – Reptilia, ●, , They are mostly terrestrial animals and their body is, covered by dry and cornified skin, epidermal scales, or scutes, , ●, , Absence of external ear opening, , ●, , Tympanam represents ear, , ●, , Two pair of limbs, , ●, , Poikilotherms, , ●, , Heart is three chambered, but four in crocodilles, , ●, , Oviparous, fertilization is internal, , ●, , Testoda, Crocodiles, Alligator, Naja, Viper

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Class- Aves, ●, , ●, ●, , the presence of feathers and most of them can fly, except flightless birds, The possess beak and wings, Endoskeleton is fully ossified and the long bone are, hollow with air cavities., , ●, , Digestive tract possess the crop and gizzard, , ●, , Heart is four chambered, , ●, , Homoiothermous (Warm blooded), , ●, , Ovoviparous, Fertilization is internal, , ●, , Eg: Corvus, Pavo, Ostrich

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Class – Mammalia, ●, , Habitats – polar ice caps, deserts, mountains,, forests, grasslands and dark caves., , ●, , Presence of mammary glands, , ●, , Two pair of limbs, , ●, , External ear is present, , ●, , Heart is four chambered, , ●, , Different types of teeth are present in jaws, , ●, , Homoiothermous, , ●, , Respiration is by lungs