What is a keystone species?
Ecology Review

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•
Biology
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.
2.
FLASHCARD QUESTION
Front
What is a decomposer?
Back
An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms.
3.
FLASHCARD QUESTION
Front
What is parasitism?
Back
A type of symbiotic relationship where one organism benefits at the expense of another, such as tapeworms in the human intestine.
4.
FLASHCARD QUESTION
Front
What happens to the amount of available energy in an energy pyramid as it moves up through the different levels?
Back
It decreases.
5.
FLASHCARD QUESTION
Front
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
Back
100 Kcal.
6.
FLASHCARD QUESTION
Front
What is an autotroph?
Back
An organism that produces its own food, typically through photosynthesis, such as plants.
7.
FLASHCARD QUESTION
Front
Define mutualism.
Back
A symbiotic relationship where both organisms benefit from the interaction.
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