What happens when an organisms cannot get enough energy?
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Transcript of What happens when an organisms cannot get enough energy?
What happens when an organisms cannot get enough energy?
Feeding Relationships• Arrows point to where the
energy goes!• Food Web – network of
all the food chains in an ecosystem
Food Web
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
Types of ConsumersHerbivores- only eat plants Carnivores - only eat animals
Omnivores- eat plants AND animals
Decomposers
Feeds on plant and animal remains
PRODUCERS- produce their own energy
-plants do this through
photosynthesis
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CONSUMERS – consume other
organisms for energy
Consumers that eat producers to get energy:
•Are primary consumers
•Are herbivores (plant-eaters)
Most of the energy the primary consumer gets
from the producer is used by the consumer.
Some of that energy moves into the atmosphere as heat.
Some energy in the primary consumer is
STORED
This energy is available for another consumer (predator).
A Consumer that Eats Another Consumer for Energy:
•Secondary Consumers
Most of the energy the secondary consumer gets
from the primary consumer is used by the secondary
consumer.
-Some of the energy is lost as heat
-some energy is stored and can be passed on to another consumer.
A consumer that eats a consumer that already ate a consumer:
•Tertiary Consumer
Checkpoint• Using the food web below, predict what would
happen if the mouse went extinct. Explain your reasoning
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
Ecological Pyramids
Energy Pyramid
Biomass Pyramid
Pyramid of Numbers
Trophic Level – each step in a food chain or food web
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
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.
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!!!