Ecology Review

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What is a pioneer species?

Back

A pioneer species is the first organism to colonize a barren environment, initiating an ecological succession. Examples include lichen and mosses.

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What role does photosynthesis play in the carbon cycle?

Back

Photosynthesis removes carbon dioxide from the atmosphere and converts it into organic compounds, providing energy for plants and oxygen for other organisms.

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Define parasitism.

Back

Parasitism is a type of symbiotic relationship where one organism (the parasite) benefits at the expense of another organism (the host), often harming it.

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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.

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What is commensalism?

Back

Commensalism is a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

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

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.

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What is ecological succession?

Back

Ecological succession is the process by which ecosystems change and develop over time, often following a disturbance.

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What is the significance of keystone species?

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Keystone species are crucial for maintaining the structure of an ecological community, affecting many other organisms in the ecosystem.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil and supporting plant growth.

Front

Define mutualism.

Back

Mutualism is a symbiotic relationship where both organisms benefit from the interaction.