Food Chains and webs
Web vs. Chain
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A food web shows the interconnectivity of all organisms in a given ecosystem. It can flow in
more than one direction.
A food chain is a single energy pathway that can only flow in one direction.
FOOD WEBS
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Typically, food webs go like this: Record this example in your notes.
FOOD CHAINS AND WEBS
Let’s make our own food web!
Symbiosis
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TN Standard: I CAN….analyze the environments and the interdependence among organisms
found in the world’s major biomes.
Symbiosis
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A relationship in which two different organisms live in close association with each other.
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Mutualism
Commensalism
Parasitism
Mutualism
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A symbiotic relationship between two species in which both species benefit.
Commensalism
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A relationship between two organisms in which one organism benefits and the other is
unaffected.
Parasitism
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A relationship between two species in which one species, the parasite, benefits from the
other species, the host, which is harmed.
Can you identify these symbiotic relationships ?
Can you identify these symbiotic relationships?
Predator-Prey
What We Know About Predator and Prey Relationships?
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Predator eats the prey
Prey is what is eaten
The prey develops defense mechanisms to prevent being eaten
Putting it together
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Compare and Contrast a Food Chain Vs. a Food Web.
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List and Describe all symbiotic relationships.
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If you finished early, work on your article response. (Due Friday)