Ecosystems and Energy Flow

What describes an interconnection of food chains in an ecosystem?

• Food chain

• Food web

• Nutrient cycle

• Energy pyramid

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Why is there a limit to the number of levels that a food chain can reach?

• Energy is lost when you move up a trophic level.

• There is an unlimited supply of energy at each level.

• Predators can only eat a certain number of prey.

• Plants can only produce a limited amount of biomass.

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What is the term for a group of different species living together in a specific area?

• Ecosystem

• Population

• Community

• Habitat

What is the term for the number of organisms of the same species that live in a particular geographic area at the same time?

• Community

• Ecosystem

• Population

• Habitat

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What is a food chain?

• A linear sequence of organisms through which nutrients and energy pass as one organism eats another.

• A random assortment of food items consumed by animals.

• A diagram showing the relationship between different species in an ecosystem.

• A list of all the foods that a particular animal can eat.

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

• A food chain is a complex network of interconnected food chains, while a food web is a single linear pathway of energy transfer.

• A food chain is a single linear pathway of energy transfer, while a food web is a complex network of interconnected food chains.

• A food chain includes only plants, while a food web includes both plants and animals.

• A food chain is a type of food web that only includes herbivores.

What is an example of a secondary consumer?

• A snake that eats a rabbit.

• A rabbit that eats grass.

• A deer that eats leaves.

• A hawk that eats a snake.

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What is the role of decomposers in an ecosystem?

• Decomposers break down dead organic matter and recycle nutrients back into the ecosystem.

• Decomposers produce energy through photosynthesis.

• Decomposers compete with producers for sunlight.

• Decomposers are responsible for pollinating plants.

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What are organisms that obtain energy by feeding on other organisms called?

• Producers

• Decomposers

• Consumers

• Autotrophs

What is the significance of energy pyramids in ecosystems?

• They show the distribution of species in an ecosystem.

• They illustrate the energy loss at each trophic level, showing that less energy is available to higher levels.

• They represent the number of organisms at each trophic level.

• They indicate the types of interactions between different species.

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