Biology20-21: Semester One Final Exam

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What is carrying capacity?

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The maximum number of individuals of a species that an environment can support sustainably.

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What is commensalism?

Back

A relationship between two organisms where one benefits and the other is neither helped nor harmed.

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What is competition in ecology?

Back

The interaction between organisms or species in which both are harmed as they compete for limited resources.

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What are the main sources of carbon dioxide in the atmosphere?

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Volcanoes, combustion of fossil fuels, and respiration of animals and plants.

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What is a secondary consumer?

Back

An organism that eats primary consumers; in a food web, it is typically a carnivore.

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What is mutualism?

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A symbiotic relationship where both organisms benefit from the interaction.

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What is parasitism?

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A relationship where one organism benefits at the expense of another organism.

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What is the difference between immigration and emigration?

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Immigration is the movement of individuals into a population, while emigration is the movement of individuals out of a population.

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What is a food web?

Back

A complex network of feeding relationships among various organisms in an ecosystem.

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What is the role of producers in an ecosystem?

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Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food web.