MCU1 Lesson 1 Quiz

What form of energy is stored in food?

• heat

• light energy

• energy of motion

• energy of molecules

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How do organisms get the energy they need?

• Plants get it from fertilizer. Animals get energy from the water.

• Plants get energy from soil. Animals get energy from the sun.

• Plants do not need energy because they do not move. Animals get energy from food.

• Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.

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Carbon exists in many forms on Earth. What does this diagram show?

• It shows how matter can pass through an ecosystem.

• It shows each step in the correct order that carbon must pass through.

• It shows how much carbon is constantly being formed and passed along.

• It shows how carbon is running out because it is being used up by all the animals.

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What are the products of photosynthesis?

• Glucose and oxygen

• Carbon dioxide and water

• Chlorophyll, protein, and DNA

• Plant stems, leaves, and root stems.

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Animals breathe in oxygen and breathe out carbon dioxide. Where does the carbon dioxide come from?

• It is produced by photosynthesis

• It is a product of cellular respiration.

• It is needed to create energy for cells.

• It is created when plants are consumed.

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What happens to the glucose inside a cell during cellular respiration?

• The cell uses carbonic acid to break down glucose.

• The cell uses water to break down glucose.

• The cell uses oxygen to break down glucose.

• The cell uses nitrogen to break down glucose.

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Which statement describes the role of the decomposer in a food web?

• Decomposers are not necessary in a food web.

• Decomposers break down matter in plants so we can use it.

• Decomposers create energy by producing their own food.

• Decomposers store matter and energy until it is needed in the ecosystem.

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Producers and consumers are both pictured in a diagram of a food web. Which statement best describes how they differ from each other?

• Consumers produce all the energy they need.

• Consumers only eat animals and producers only eat plants.

• Producers eat living organisms, and consumers eat organisms that have died.

• Consumers obtain energy by eating food, and producers obtain energy from sunlight.

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What is the primary role of decomposers in a food web?

• to control the population of producers and consumers

• to compete with producers for energy and other resources

• to provide a source of energy for the producers in the ecosystem

• to recycle energy and materials from dead producers and consumers

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The picture shows a food chain that might exist in a meadow. If there was a decrease in the beetle population, how might the food chain be affected?

• The owl population would decrease

• The population of green plants would decrease

• The toad and snake populations would increase

• The green plants and a toad populations would decrease

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