Animal Classification - Classification Systems & Invertebrates
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| the smallest unit of a living organism | cells
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| warm-blooded | the ability for an animal to create their own body heat
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| cold-blooded | the animals' body heat is determined by outside temperature
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| endoskeleton | inside skeleton- this skeleton grows along with the animal
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| exoskeleton | outside skeleton - the hard, outer body that protects the soft body parts of many invertebrates
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| Classification system (What order do they go?) | Kingdom - Phylum - Class - Order - Family - Genus - Species
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| the smallest, most specific level of classification | species
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| the broadest level of classification | kingdom
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| Why is a classification system needed? | helps scientists to communicate with other scientists by knowing exactly what organism they are talking about
organizes all living things into groups based on similar features
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| Sponges | simplest body structure -- no stomach or organs - they are filter feeders
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| jelly fish, sea anemonie (Cnidarians) | stinging cells organized into tissues. It has tentacles and mouth, but no brain or heart
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| sea stars, sand dollars (Echinoderms) | spiny skin and tube feet (which move by pushing water through them). It forces out its mouth & onto its prey to eat
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| Worms | 3 types - flat, round, and segmented - MORE evolved than sponges, jelly fish, or sea stars. They have more complex body systems organs such as a heart and brain and muscles. (invertebrates)
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| snails, clams, oysters, squid, octopus ( Mollusks) | muscular foot for movement - most have a soft body surrounded by a shell. (invertebrates)
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| insects, spiders, lobsters, crabs ( belong to Arthropods) | largest group of invertebrates in the world, jointed legs, 3 body parts, exoskeletons Insects - largest group of arthropods (invertebrates)
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| Ancient Bacteria: (Monera) Kingdom | smallest, one-celled, live in harsh places such as hot springs, deep underground, or deep ocean vents
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| True Bacteria: (Monera) Kingdom | smallest, one-celled, can live on land or on water
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| Protists Kingdom (algae) | usually single-celled, but with a nucleus, can make their own food from sun's energy - live in water or wet places
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| Fungus Kingdom (mushrooms, fungus, mold, yeast, mildew) | many cells - not movable, gets food from decaying/dead plants or animals, mostly live on land.
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| Plant Kingdom | many cells, use sunlight to make food (photosynthesis), live on land and water. Some plants use roots & veins to draw water and others do not.
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| Animal Kingdom | Consists of vertebrates(mammals, reptiles, amphibians, fish, and birds) and invertebrates (sponges, cnidarians, echinoderms, worms, mollusks, arthropods). Most animals are invertebrates.
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