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Fish 3 classes –Agnatha: jawless fishes Lamprey, Hagfish –Chondricthyes: Cartilaginous fishes Sharks, skates, rays –Ostichthyes: Bony fishes All other.

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Presentation on theme: "Fish 3 classes –Agnatha: jawless fishes Lamprey, Hagfish –Chondricthyes: Cartilaginous fishes Sharks, skates, rays –Ostichthyes: Bony fishes All other."— Presentation transcript:

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2 Fish 3 classes –Agnatha: jawless fishes Lamprey, Hagfish –Chondricthyes: Cartilaginous fishes Sharks, skates, rays –Ostichthyes: Bony fishes All other fishes Breathing: gills or gill slits 2 chambered heart Sexual Reproduction –Most external fertilization Scales

3 Amphibians Smooth moist skin Mucous glands –sometimes associated with poison glands Metamorphosis Ectothermic Sexual reproduction Variety of respiratory modes –Lungs, gills, skin

4 Reptiles Adaptations for life on dry land Scales Legs positioned right underneath body –Can support body weight better 3 chambered heart –Crocs have 4 chambers Ectotherms Sexual reproduction –Internal fertilization –Amniotic egg

5 Birds Adaptations for flight: –Feathers –Wings –Hollow bones Endothermic 4 chambered heart Sexual reproduction –internal fertilization –Amniotic egg with hard shell

6 Mammals Hair Endothermic Provide milk for their young 4 chambered heart Different types of teeth Modified limbs

7 Mammals Placental Mammals –Offspring are carried inside the mother until development is almost complete –Nourishment and oxygen provided via placenta

8 Mammals Marsupials –Short period of development inside mom –Second period of development in a pouch made of hair and skin

9 Mammals Montremes –Egg laying mammals –Have hair and mammary glands –Only found in Austrailia, New Guinea, and Tazmania –Echidnas and Platypuses


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