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What is Classification?
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Classfication System Scientists Use
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Phyla are subdivided into classes Classes are subdivided into orders
Kingdoms are divided into groups called phyla Phyla are subdivided into classes Classes are subdivided into orders Orders are subdivided into families Families are divided into genera Genera contain closely related species Species is unique
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Classification is… scientists use classification to group animals and plants according to their similarities and differences.
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How do scientists classify animals?
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Animals Vertebrates – animals with a backbone. Invertebrates – animals without a backbone.
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Animals Vertebrates Mammals Reptiles Invertebrates Birds Amphibians Fish
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Feed milk to their young Bear live young
Mammals Have hair or fur Are warm-blooded Feed milk to their young Bear live young
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Have feathers Are warm-blooded Have hollow bones Most can fly Lay eggs
Birds Have feathers Are warm-blooded Have hollow bones Most can fly Lay eggs
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Reptiles Have scales Live on land Are cold-blooded Usually lay eggs
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Live in water and on land Are cold-blooded Have smooth skin Lay eggs
Amphibians Live in water and on land Are cold-blooded Have smooth skin Lay eggs
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Fish Are cold-blooded Have gills and scales Live in water
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What About Plants?
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Vascular – a plant that has a root system to move water and nutrients.
Plants Vascular – a plant that has a root system to move water and nutrients. Nonvascular – a plant that absorbs water and nutrients directly from the place on which they grow.
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Plants Vascular Nonvascular Reproduce using seeds
Reproduce using spores Nonvascular
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Plants Vascular Reproduce using seeds Reproduce using spores Nonvascular flowering Nonflowering
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See Science Textbook Look at the charts in the science text book to see an example of how living things are classified. ~ Pages
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