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Vertebrates

ertebrates V Animals with backbones

Fish [class- Pisces]

Live in water They possess ,

»A streamlined body »Fins for locomotion»Gills for exchange of gases

Skin covered with scales.They have two chambered heartThey have variable Body temperature (Poikilothermic)

Cartilagous Fish

They have ,A skeleton of cartilageSeparate gills which are not covered

» Shark

Bony FishThey have ,

A skeleton with bonesGills covered with a bony plate

» Trout

Amphibians

Have smooth moist skinLungs and moist skin act as respiratory organsThree chambered heartAmphibians live the first part of their lives in water and the second part on landPoikilothermic

» frogs and toads,» salamanders

Reptiles

The animals first adapt to live on landThey have

Rough dry skin (The skin is covered with hard dry scales )Three chambered heart

Breathe via lungs Most of the Reptile have four legs some of them have no legs they are called snakes.Poikilothermic

Birds

The body is covered with feathersFront limbs are adapted as wingsPosses a beak Have a four chambered heart Have constant body temperature (homoiothermic)

Mammals

Mammals posses ,Hair coat covering their bodyTwo external earsFour chambered heart Mammary glands to produce milk

Breathe via lungsDuring their life cycle mammals may form two sets of teeth.

Have constant body temperature (homoiothermic)