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Published byAda Bradley Modified over 9 years ago
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What are living things?
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5 characteristic's that living thing share 1.Made up of one or more cells 2.Respond to their environment 3.Use energy 4.Grow and mature 5.Living things Reproduce
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: Unicellular or Multicellular Multicellular animals have more than one cell Ex. Lion Unicellular organisms are made up of one cell Ex. Paramecium
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Multicellular Organisms Cells have specialized functions in a multicellular organism. Ex. Blood cell has a specific job to do. One job is to carry oxygen through out the body – Skin cell has a specific job to do they protect your body
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Respond to their environment Stimulus and Response Stimulus – A change that affects the activity of that organism Response – how the organism reacts
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Stimulus and Response Stimulus- you are cold Response – Goose bumps on skin
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homeostasis The maintenance of a stable internal environment Ex. Your body sweats when it gets too hot; sweating helps control your body temperature at a comfortable level.
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Living Things Need energy to survive. What are some ways organisms get their energy?
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Grow and mature Living things grow Unicellular organisms grows by getting larger and then dividing Multicellular organisms grow by increasing the number of cells and they get bigger
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Reproduction animals reproduce Sexual reproduction results in diverse offspring. Two parents What does this mean: diverse offspring? Asexual reproduction – single parent produces offspring whose genetic material is identical to its parent
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What do living things need to survive? Almost all living things need: – water, – air, – food – a place to live Water is essential for life Organisms often compete for food, water and a place to live
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Invertebrates Animals without a backbone. Have no bones Exoskeleton – external covering function is to support the body 95% of the animal population are invertebrates! Most reproduce Asexually
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Invertebrates Jellyfish Flatworms, segmented worms Sponges
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Vertebrates Contain a backbone Endoskeleton – skeleton inside body Vertebrae- protect part of the nervous system Skull- protect brain vertebrates reproduce sexually
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brainpop http://www.brainpop.com/science/diversityof life/vertebrates/ http://www.brainpop.com/science/diversityof life/vertebrates/
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