What happens when an organisms cannot get enough energy?
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Transcript of What happens when an organisms cannot get enough energy?
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What happens when an organisms cannot get enough energy?
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Feeding Relationships• Arrows point to where the
energy goes!• Food Web – network of
all the food chains in an ecosystem
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Food Web
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Autotrophs vs. Heterotrophs
• Autotrophs – make their own food so they are called PRODUCERS
• Heterotrophs – get their food from another source so they are called CONSUMERS
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Types of ConsumersHerbivores- only eat plants Carnivores - only eat animals
Omnivores- eat plants AND animals
Decomposers
Feeds on plant and animal remains
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PRODUCERS- produce their own energy
-plants do this through
photosynthesis
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CONSUMERS – consume other
organisms for energy
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Consumers that eat producers to get energy:
•Are primary consumers
•Are herbivores (plant-eaters)
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Most of the energy the primary consumer gets
from the producer is used by the consumer.
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Some of that energy moves into the atmosphere as heat.
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Some energy in the primary consumer is
STORED
This energy is available for another consumer (predator).
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A Consumer that Eats Another Consumer for Energy:
•Secondary Consumers
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Most of the energy the secondary consumer gets
from the primary consumer is used by the secondary
consumer.
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-Some of the energy is lost as heat
-some energy is stored and can be passed on to another consumer.
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A consumer that eats a consumer that already ate a consumer:
•Tertiary Consumer
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Checkpoint• Using the food web below, predict what would
happen if the mouse went extinct. Explain your reasoning
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How does that energy flow through an ecosystem?
• Energy flows through an ecosystem in ONE direction– sun or chemicals
– autotrophs
– heterotrophs
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Energy Pyramids
•Amount of available energy decreases for higher consumers
•Amount of available energy decreases down the food chain (or as you go up in the pyramid)
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Energy Pyramids
•It takes a large number of producers to support a small number of primary consumers•It takes a large number of primary consumers to support a small number of secondary consumers
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Ecological Pyramids
Energy Pyramid
Biomass Pyramid
Pyramid of Numbers
Trophic Level – each step in a food chain or food web
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Pyramid of Energy – amount of energy available at each trophic level
• Most of the energy is used by the organisms for life processes
• Some of the energy is lost as heat
Only 10% of the energy from each trophic level is passed on to the next level
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Why are nutrients important ?
95% of your body is made of…
1) OXYGEN
2) CARBON
3) HYDROGEN
4) NITROGEN
• Every living organism needs nutrients to build tissues and carry out essential life functions.
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Exit Ticket (Assessment Grade)
• Explain why only 10% of the energy from an organism gets transferred to the next level in an energy pyramid
• Use complete sentences!!!