Ch. 1 & 2 Ecosystems Review

What is this an example of?

• Food Web

• Food Chain

• Energy Pyramid

• Energy Web

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This image is showing an example of a...

• Food chain

• Food source

• Food web

• Population

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If Alice needs to put on her jacket because the temperature is cold, what kind of interaction is this an example of?

• Biotic / Biotic

• Biotic / Abiotic

• Abiotic / Abiotic

• This is not an interaction.

What is the difference between a decomposer and a scavenger?

• A decomposer breaks down the remains of organisms, while a scavenger produces its own food by using sunlight.

• A decomposer (usually a carnivore) consumes the remains of dead animals, while a scavenger breaks down the remains of organisms.

• A decomposer breaks down the remains of organisms, while a scavenger (usually a carnivore) consumes the remains of dead animals.

• A decomposer and scavenger are the same thing.

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What is a community or group of living organisms that live in and interact with each other in a specific environment called?

• Environment

• Population

• Abiotic factor

• Ecosystem

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

• A food web is a simple model and consists of only a few organisms, while a food chain is a more complex model that describes how organisms receive energy from other organisms.

• A food chain is a simple model and consists of only a few organisms, while a food web is a more complex model that describes how organisms receive energy from other organisms.

• A food web is a simple model and consists of many organisms, while a food chain is a more complex model that describes "who eats who."

• A food chain is a simple model and consists of only a few organisms, while a food web is a more complex model that describes "who eats who."

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If the dragonfly population increased, what effect would occur?

• Only salamanders population would decrease.

• Trout and salamander population numbers would decrease.

• Frog numbers would increase; phytoplankton would decrease.

• Frog population would decrease.

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What do the arrows represent in this diagram?

• The arrows represent the flow of energy through the food web.

• The arrows represent who eats who in the food web.

• The arrows represent the direction the organism travels throughout the ecosystem.

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What is a decomposer?

• A photosynthesizing organism that makes its own food by taking sunlight and using the energy to make sugar.

• An organism that breaks down dead plant and animal material for energy.

• An organism that can't make its own food and has to feed on producers or other consumers to survive.

• An organism that feeds on the dead remains of once living organisms.

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Where is the least energy found in the energy pyramid?

• Top Predator

• Primary Consumer

• Producer