Ecology Review-Biology

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What is commensalism?

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

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What is the definition of an organism in biological organization?

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An individual living entity that can react to stimuli, reproduce, grow, and maintain homeostasis.

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What is a trophic level?

Back

Each step in a food chain or food web, representing the flow of energy and nutrients through an ecosystem.

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What is biomass?

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The total mass of living matter within a given area or volume, often measured in terms of energy available at each trophic level.

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What is primary succession?

Back

The process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption.

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What is secondary succession?

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The process of ecological change that occurs in an area where soil is present but has been disturbed, such as after a forest fire.

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What is a pioneer species?

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The first species to colonize previously disrupted or damaged ecosystems, initiating the process of ecological succession.

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What is the role of producers in an ecosystem?

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Organisms that produce their own food through photosynthesis or chemosynthesis, forming the base of the food chain.

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What is predation?

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A biological interaction where one organism (the predator) hunts and consumes another organism (the prey).

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What is the significance of laying many eggs for species like the giant octopus?

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It increases the chance that more individuals will survive to adulthood, ensuring the continuation of the species.