Living Things S7L4 Students will examine the dependence of organisms on one another and their...
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Transcript of Living Things S7L4 Students will examine the dependence of organisms on one another and their...
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Living Things
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S7L4• Students will examine the dependence of
organisms on one another and their environment.
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Living vs. Nonliving #1
R. Bryant 2008 WSMS – Based on “Science Starters” by T. Trimpe at http://sciencespot.net
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Determine which objects are considered living or nonliving.
A. B. C.
D.
E.F.
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The solution …
Living NonLiving
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Why is R.O.G.E.R.S. a living thing?
• Living things respond……
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Respond/React to Changes
• Organisms react to change in their surroundings.• Any reaction to change is called a response.– For example: A bright
light may cause you to blink.
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Why is R.O.G.E.R.S. a living thing?• Living things are organized………….
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Organized from smallest made of Cells
• Organisms are made up of one or more cells.
• A cell is the basic unit of structure and function in living things.
–Cells = the
of life.
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• Cells are organized into tissues• Tissues are organized into
organs• Organs are organized into
organ systems• Organ systems are organized
into organisms
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Why is R.O.G.E.R.S. a living thing?
• Living things grow and develop…….
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Grow and Develop• Living things change, or develop, during
their lifetimes.• One way organisms change is by
growing.• Cell division - the orderly formation of new cells. • Cell enlargement - the increase in size of a cell.
Cells grow to a certain size and then divide. • An organism gets larger as the number of its cells
increases. • Living things may also change in appearance.For example: tadpoles and frogs
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Why is R.O.G.E.R.S. a living thing?
• Living things take in and use energy……
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Use and Need Energy• All organisms
need and use energy to live.
• Energy is the ability to do
work.
• Sunlight is the source of energy for most living things.– Plants use the energy in
sunlight to make food – Animals get energy by
eating plants or other animals that have eaten plants.
– Bacteria and fungi get energy from decaying plant or animal matter
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Why is R.O.G.E.R.S. a living thing?
• Living things reproduce……….
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ReproduceReproduction is not essential for the survival of individual organisms, but must occur for a species to survive. All living things reproduce in one of the following ways:
Asexual reproduction - Producing offspring without the use of gametes, sex cells. Sexual reproduction - Producing offspring by the joining of sex cells.
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Why is R.O.G.E.R.S. a living thing?• Living things have Similar
chemicals…….• Most common elements in living things are carbon, hydrogen, nitrogen, and oxygen. These four elements constitute about 95% of your body weight.
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Adapted to Their
Surroundings• Organisms are adapted, or suited,
to their surroundings.• All organisms have features that
help them survive in their surroundings.– For example: fish have gills
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Other characteristics
• Movement – Internal movement of organelles and fluids– External movement- up or down– Locomotion
• Maintain Homeostasis– Relatively constant internal environment, pH,
temp, salinity (like humans body temperature stays right around 98.6)
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What do living things need?• A place to live–Habitat -Soil, water, air, gasses
• Space• Raw materials- Food, water, minerals
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