Bio EOC Review: Ecology

Front

What is the role of nitrogen fixation in the ecosystem?

Back

Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into a form usable by plants and animals, as atmospheric nitrogen is not directly usable by them.

Front

What are primary consumers in an ecosystem?

Back

Primary consumers are organisms that eat producers (plants) to obtain energy. They are typically herbivores.

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What is competition in ecological terms?

Back

Competition occurs when two or more organisms vie for the same resources (such as food, space, or mates) in an ecosystem.

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms.

Front

How do animals obtain nitrogen?

Back

Animals obtain nitrogen primarily by consuming plants or other animals that contain nitrogen compounds.

Front

What is the difference between a food web and a food chain?

Back

A food web is a complex network of feeding relationships among various organisms in an ecosystem, while a food chain is a linear sequence showing how energy and nutrients flow from one organism to another.

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What is denitrification?

Back

Denitrification is the process by which bacteria convert nitrates in the soil back into nitrogen gas (N2), returning it to the atmosphere.

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What is symbiosis?

Back

Symbiosis is a close and long-term interaction between two different species, which can be beneficial, neutral, or harmful to one of the parties.

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What is the significance of producers in an ecosystem?

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Producers, such as plants, are essential because they convert solar energy into chemical energy through photosynthesis, forming the base of the food web.

Front

What is an omnivore?

Back

An omnivore is an organism that eats both plants and animals, obtaining energy from multiple sources.