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BIS 2B Community Ecology/ Ecosystems
Questions and Correct Answers/ Latest
Update / Already Graded
Competition
Ans: Individuals require the same shared, limiting resource,
reducing growth & survival for both competitors.
Intraspecific competition
Ans: Competition within the same species.
Interspecific competition
Ans: Competition between different species.
Competitive Exclusion Principle
Ans: Two species requiring the exact same limiting resource
cannot coexist; one outcompetes the other.
Fundamental niche
Ans: Where a species could live without competitors.
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Realized niche
Ans: Where a species actually lives with competition.
Resource partitioning
Ans: Species use different parts or different locations of the
resource to coexist.
Examples of resource partitioning
Ans: Warblers feeding at different parts of a tree; Bats using
different habitat zones & prey sizes.
Lotka-Volterra predator-prey model
Ans: Shows how predator & prey abundances cycle over time.
Prey equation (LV model)
Ans: dV/dt = rV - pVP; Growth minus predation.
Predator equation (LV model)
Ans: dP/dt = cpVP - dpP; Births depend on prey; predators die
without prey.
All rights reserved © 2025/ 2026 |
BIS 2B Community Ecology/ Ecosystems
Questions and Correct Answers/ Latest
Update / Already Graded
Competition
Ans: Individuals require the same shared, limiting resource,
reducing growth & survival for both competitors.
Intraspecific competition
Ans: Competition within the same species.
Interspecific competition
Ans: Competition between different species.
Competitive Exclusion Principle
Ans: Two species requiring the exact same limiting resource
cannot coexist; one outcompetes the other.
Fundamental niche
Ans: Where a species could live without competitors.
All rights reserved © 2025/ 2026 |
, Page |2
Realized niche
Ans: Where a species actually lives with competition.
Resource partitioning
Ans: Species use different parts or different locations of the
resource to coexist.
Examples of resource partitioning
Ans: Warblers feeding at different parts of a tree; Bats using
different habitat zones & prey sizes.
Lotka-Volterra predator-prey model
Ans: Shows how predator & prey abundances cycle over time.
Prey equation (LV model)
Ans: dV/dt = rV - pVP; Growth minus predation.
Predator equation (LV model)
Ans: dP/dt = cpVP - dpP; Births depend on prey; predators die
without prey.
All rights reserved © 2025/ 2026 |
