Evolution of Eukaryotes. Invertebrates Lacking a backbone Examples – Jellyfish – Sponges – Crabs.

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Presentation transcript:

Evolution of Eukaryotes

Invertebrates Lacking a backbone Examples – Jellyfish – Sponges – Crabs

DIVIDING LINE Invertebrates to Vertebrates No Backbone to Backbone Increased specialization and movement of organisms begins

Fish Scales Gills—Breath Underwater Soft eggs – 1 exception - Sharks Aquatic Life 2 Chambered Heart

Amphibians Skin Gills/Lungs Soft Eggs 2 Chambered Heart Appendages

Reptiles Scales, protection (dessication) Lungs Hard eggs Appendages or Loss of Appendages 3 Chambered Heart* Crocodiles

Dinosaurs Scales Lungs Hard eggs Terrestrial + Aquatic Birds Descended Appendages

Birds Feathers – Modified scales Lungs Hard eggs Live on land Flight Hollow Bones 4 Chambered Heart Homeothermic

Mammals Hair/Fur Lungs Hard eggs/Live birth Mammary Glands Four Chambered Heart Homeothermic

Primates Skin/hair Lungs Live birth Terrestrial/Trees Tactile Fingers/Toes Opposable Thumbs* Intelligence 4 Chambered Heart Homeothermic

Humans Hair Lungs Live birth Terrestrial Higher Intelligence Opposable Thumb 4 Chambered Heart Homeothermic Bipedalism

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