Symbiosis and Ecosystems
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Objective
I can analyze how symbiotic relationships affect populations in an ecosystem.
Part 1 of 4
Warm-up video
Amoeba Sisters · 6:50Vetted channel
We don't generate video — this one is by Amoeba Sisters on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
In a predator-prey relationship, the predator population tends to increase when the prey population increases, but may decrease if the predator population becomes too large.
- 2
Competition occurs when different species or individuals within a species compete for the same limiting resources, such as food or light.
- 3
In mutualism, both organisms benefit; in parasitism, one organism benefits and the other is harmed; and in commensalism, one organism benefits and the other is neither helped nor harmed.
Part 3 of 4
Practice
9 questions
Which of the following describes the relationship between predator and prey populations?
In the context of ecological relationships, what is competition?
Part 4 of 4
Exit ticket
Quick comprehension check
“Explain how a parasitic relationship, such as fleas on a dog, can affect the populations of both the parasite (fleas) and the host (dog) in an ecosystem.”
Sample answer included in the free materials
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