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Life Science #1

Animal Classification - Classification Systems & Invertebrates

the smallest unit of a living organism cells
warm-blooded the ability for an animal to create their own body heat
cold-blooded the animals' body heat is determined by outside temperature
endoskeleton inside skeleton- this skeleton grows along with the animal
exoskeleton outside skeleton - the hard, outer body that protects the soft body parts of many invertebrates
Classification system (What order do they go?) Kingdom - Phylum - Class - Order - Family - Genus - Species
the smallest, most specific level of classification species
the broadest level of classification kingdom
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
Sponges simplest body structure -- no stomach or organs - they are filter feeders
jelly fish, sea anemonie (Cnidarians) stinging cells organized into tissues. It has tentacles and mouth, but no brain or heart
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
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)
snails, clams, oysters, squid, octopus ( Mollusks) muscular foot for movement - most have a soft body surrounded by a shell. (invertebrates)
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)
Ancient Bacteria: (Monera) Kingdom smallest, one-celled, live in harsh places such as hot springs, deep underground, or deep ocean vents
True Bacteria: (Monera) Kingdom smallest, one-celled, can live on land or on water
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
Fungus Kingdom (mushrooms, fungus, mold, yeast, mildew) many cells - not movable, gets food from decaying/dead plants or animals, mostly live on land.
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.
Animal Kingdom Consists of vertebrates(mammals, reptiles, amphibians, fish, and birds) and invertebrates (sponges, cnidarians, echinoderms, worms, mollusks, arthropods). Most animals are invertebrates.
Created by: gilbertskj