Biology 2 General Ecology Test 2024

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What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen moves from the atmosphere into the soil, through living organisms, and back to the atmosphere. It involves processes such as nitrogen fixation, nitrification, and denitrification.

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What is a biome?

Back

A biome is a large geographical biotic unit, a major community of plants and animals with similar life forms and environmental conditions. It includes all other levels of organization such as populations, communities, and ecosystems.

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What is mutualism?

Back

Mutualism is a type of symbiotic relationship where both species benefit from the interaction. An example is bees pollinating flowers while gathering nectar.

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What is parasitism?

Back

Parasitism is a symbiotic relationship where one organism (the parasite) benefits at the expense of another organism (the host). An example is a tapeworm living in the intestines of a mammal.

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What is commensalism?

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Commensalism is a symbiotic relationship where one organism benefits while the other is neither helped nor harmed. An example is barnacles attaching to a whale.

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What is predation?

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Predation is an interaction where one organism (the predator) kills and eats another organism (the prey). An example is a lion hunting a zebra.

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What is the role of decomposers in an ecosystem?

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Decomposers break down dead organic matter, returning nutrients to the soil and making them available for plants. They play a crucial role in nutrient cycling.

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What is the water cycle?

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The water cycle is the continuous movement of water on, above, and below the surface of the Earth. It includes processes such as evaporation, condensation, precipitation, and infiltration.

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What is the difference between a population and a community?

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A population is a group of individuals of the same species living in a specific area, while a community is made up of different populations of various species interacting in a particular environment.

Front

What is an ecosystem?

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An ecosystem is a biological community of interacting organisms and their physical environment. It includes both biotic (living) and abiotic (non-living) components.