Life Science Ch 3 Test How Does Energy Move in an Ecosystem

Which organisms transform light energy from the sun into food for other organisms in an ecosystem?

• decomposers

• herbivores

• omnivores

• producers

Which organism makes its own food?

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Which of these is an example of a consumer in an ecosystem?

• a robin eating a worm

• the sun shining on a plant

• a plant using photosynthesis

• bacteria using chemicals to break down food

Which of these is the source of most energy in an ecosystem?

• plants

• omnivores

• herbivores

• mushrooms

Which statement describes the role of chlorophyll in the process of photosynthesis?

• It absorbs sunlight to produce carbon dioxide.

• It converts plant sugars into air and water

• It converts food from the soil into plant sugars

• It absorbs sunlight that plants use. to make sugars.

What do all living things need to survive?

• meat

• grass

• energy

• sunlight

John learns that squirrels are small animals that are herbivores. What does this tell him about the squirrels' behavior?

• They eat plants or animals.

• They get energy from bacteria.

• They get energy only from plants.

• They are hunted by larger herbivores.

Which kind of organisms get all of their energy from eating only other animals?

• producers

• carnivores

• omnivores

• decomposers

Scientists once thought chimpanzees ate only plants. Then they learned that chimpanzees also eat meat. How did this new information change the animal's classification?

• from carnivore to producer

• from herbivore to carnivore

• from producer to omnivore

• from herbivore to omnivore

Christine is raising earthworms for a science fair. Since earthworms are decomposers, which would be best to feed them?

• decaying plants and animals

• insects and small bugs

• small bits of meat

• green vegetables