Animal Kingdom -- Phylum Chordata

Class: Cyclostomata

Members- Lamprey and Hagfish

Jaws- Absent

Paired appendages- Absent

Habits- Mostly marine

Exoskeleton- Absent

Endoskeleton- Cartilagenous

Respiration- Gills

Heart- 2- chamberd

Homeo/ Poikilothermic- Poikilothermic

Fertilization- External

Ovi/viv parous : Oviparous

Development : Indirect

Class: Chondichthyes

Members- Cartilagenous fishes like shark, skates.

Jaws- Present

Paired appendages- Present

Habits- Marine

Exoskeleton- Placoid dermal scales

Endoskeleton- Cartilagenous

Respiration-Gills

Heart- 2 chambered

Homeo/ Poikilothermic- Poikilothermic

Fertilization- Internal

Ovi/viv parous : Mostly viviparous

Development : direct

Class: Osteicthyes

Members- Bony Fishes like Labeo and Sea horse

Jaws- Present

Paired appendages- Present

Habits- Marine or fresh Water

Exoskeleton- Cycloid / ctenoid dermal scales

Endoskeleton- Bony

Respiration- Gills

Heart- 2 chambered

Homeo/ Poikilothermic- Poikilothermic

Fertilization- External

Ovi/viv parous : Mostly Oviparous

Development : direct

Class: Amphibia

Members- Frogs, toads, salamanders

Jaws- Present

Paired appendages- Present

Habits- Aquatic or semu-aquatic, Never marine

Exoskeleton- Absent

Endoskeleton- Bony

Respiration- Lungs, skin and buccal lining

Heart- 3 chambered

Homeo/ Poikilothermic- Poikilothermic

Fertilization- External
Ovi/viv parous : Oviparous

Development : Indirect

Class: Reptilia

Members- Tortoises, turtles, snakes, lizards and crocodiles

Jaws- Present

Paired appendages- Present

Habits- Mostly terrestrial

Exoskeleton- Epidermal scales

Endoskeleton- Bony

Respiration- Lungs

Heart- 3 chambered

Homeo/ Poikilothermic- Poikilothermic

Fertilization- Internal

Ovi/viv parous : Oviparous

Development : direct

Class: Aves

Members- Flying and flightless birds

Jaws- Modified into beaks

Paired appendages- Present

Habits- Arboreal or aerial

Exoskeleton- Epidermal Scales

Endoskeleton- Bony

Respiration- Lungs with air sacs

Heart- 4 chambered

Homeothermic/ Poikilothermic- Homeothermic

Fertilization- Interal

Ovi/viv parous : Oviparous

Development : direct

Class: Mammalia

Members- Prototherians,Metatherians and euthetians

Jaws- Present

Paired appendages- Present

Habits- Mostly terrestrial

Exoskeleton- Hairs nails, hooves

Endoskeleton- Bony

Respiration- Lungs

Heart- 4 chambered

Homeo/ Poikilothermic- Homeothermic

Fertilization- Internal

Ovi/viv parous : Viviparous except prototherians

Development : direct