Embedded Files
Overview
Overview
After learning about food webs, students view the world as everyone out for themselves in strict predator-prey relationships, but in reality nature is more complicated. Symbiosis and competition help students understand and categorize complex ecological relationships.
Standard
Standard
Power Standard: Categorize types of ecological relationships between organisms.
State Standard: 7.MS-LS2-2. Describe how relationships among and between organisms in an ecosystem can be competitive, predatory, parasitic, and mutually beneficial and that these interactions are found across multiple ecosystems.
Key questions
Key questions
Why would organisms work together in an ecosystem?
When organisms work together, is it always win-win?
Key in-class activities
Key in-class activities
Coyote Game Simulation
EcoMUVE data analysis
Important vocabulary
Important vocabulary
Symbiosis: a close relationship between 2 different species needed for survival for at least 1 of other organisms
Mutualism: [two thumbs up] a type of symbiosis that benefits both
Commensalism:[one thumb up one thumb to the side] a type of symbiosis where one organisms benefits and other neither helped nor harmed
Parasitism: [one thumb up one thumb down] a type of symbiosis where one organisms benefits and other is harmed
Competition: when organisms of the same or different resources need to use the same limited resources
Predation: when one animal kills and eats another animal for energy
Video resources
Video resources
Reading resources
Reading resources
Symbiosis Reading.pdfFrom Skiatook Schools middle school science text, based on CK-12
Essential skills check
Essential skills check
Sample MCAS question
Sample MCAS question
Hawks and owls are both birds of prey and often live in the same areas. Which of the following factors most likely limits competition for prey between hawks and owls living in the same area?
A. Hawks and owls have different predators.B. Hawks have speckled eggs and owls have white eggs.C. Hawks and owls are camouflaged by different feather colors.D. Hawks are active during the day and owls are active during the night.
A. Hawks and owls have different predators.B. Hawks have speckled eggs and owls have white eggs.C. Hawks and owls are camouflaged by different feather colors.D. Hawks are active during the day and owls are active during the night.
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