ch4 food web and energy test review

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What is a food web?

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A food web is a complex network of interconnected food chains in an ecosystem, showing how energy and nutrients flow between different organisms.

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What is the role of producers in a food web?

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Producers, such as plants and algae, convert sunlight or chemical energy into food through photosynthesis or chemosynthesis, forming the base of the food web.

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What is energy transfer in a food web?

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Energy transfer in a food web refers to the movement of energy from one trophic level to another, typically decreasing as it moves up the levels.

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What is a trophic level?

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A trophic level is a position in a food chain or web, defined by how an organism obtains its energy, such as producers, primary consumers, and secondary consumers.

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What is bioaccumulation?

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Bioaccumulation is the process by which substances, such as toxins, accumulate in an organism's body over time, often occurring at higher levels in higher trophic levels.

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What is chemosynthesis?

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Chemosynthesis is the process by which certain organisms, like bacteria, convert inorganic compounds into organic matter using chemical energy, often found in deep-sea environments.

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How much energy is typically transferred from one trophic level to the next?

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Typically, only about 10% of the energy from one trophic level is transferred to the next level, with the rest lost as heat.

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What is the significance of arrows in a food web?

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The arrows in a food web indicate the direction of energy flow, pointing from the organism that is being eaten to the organism that is eating.

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What are primary consumers?

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Primary consumers are organisms that eat producers; they are typically herbivores that obtain energy by consuming plants.

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What are secondary consumers?

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Secondary consumers are organisms that eat primary consumers; they can be carnivores or omnivores.