Ecology
description
Transcript of Ecology
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ECOLOGYPlants and animals depend on each other and their physical environment.
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OBJECTIVE Describe the flow of energy and matter
through food chains and food webs.
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ENERGY FLOW THROUGH ECOSYSTEMS Energy flows
through ecosystems in one direction
Energy flows from the Sun to Producers to Consumers to Decomposers
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ENERGY FLOW THROUGH ECOSYSTEMS
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ENERGY FLOW THROUGH ECOSYSTEMS
process may be visualized with food chains
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ENERGY FLOW THROUGH ECOSYSTEMS process may be visualized with energy
pyramids.
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FOOD WEBS Food webs identify
feeding relationships among producers, consumers, and decomposers in an ecosystem.
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MATTER CYCLES Matter is transferred from one
organism to another and between organisms and their physical environment.
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WATER CYCLE
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CARBON AND OXYGEN CYCLE IN PS.
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CARBON CYCLE
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NITROGEN CYCLE
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OBJECTIVE Provide evidence that green plants
make food and explain the significance of this process to other organisms
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PHOTOSYNTHESIS the Sun’s energy is
converted into and stored as chemical energy in the form of a sugar.
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PHOTOSYNTHESIS Photosynthesis is
carried on by green plants and other organisms containing chlorophyll.
Chlorophyll Molecule (found inside the chloroplasts)
Moss Chloroplasts
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PHOTOSYNTHESISThe quantity of sugar molecules increases in green plants as sunlight increases
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OXYGEN AND CARBON DIOXIDE The major source of atmospheric oxygen is
photosynthesis.
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OXYGEN AND CARBON DIOXIDE Carbon dioxide is removed from the
atmosphere and oxygen is released during photosynthesis.
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PRODUCERS Green plants are the
producers of food which is used directly or indirectly by consumers
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PRODUCERS Green plants are the
producers of food which is used directly or indirectly by consumers