What is a keystone species?
Keystone Species

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Science
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance. Its presence or absence can significantly impact the structure and function of the ecosystem.
2.
FLASHCARD QUESTION
Front
What role do producers play in an ecosystem?
Back
Producers, or autotrophs, are organisms that create their own energy through photosynthesis or chemosynthesis. They form the base of the food chain and provide energy for primary consumers.
3.
FLASHCARD QUESTION
Front
What is the 10% rule in ecology?
Back
The 10% rule states that only about 10% of the energy from one trophic level is transferred to the next level in a food chain.
4.
FLASHCARD QUESTION
Front
What happens to energy as it moves up trophic levels?
Back
As energy moves up trophic levels, it decreases due to energy loss through metabolic processes, heat, and waste.
5.
FLASHCARD QUESTION
Front
What is niche partitioning?
Back
Niche partitioning is the process by which competing species use the environment differently to coexist, reducing competition for resources.
6.
FLASHCARD QUESTION
Front
How do keystone species maintain ecosystem balance?
Back
Keystone species help maintain the structure of an ecosystem by controlling populations of other species, which in turn affects the entire community.
7.
FLASHCARD QUESTION
Front
What is a trophic level?
Back
A trophic level is a position in a food chain or food web, defined by how an organism obtains its energy.
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