Unit Quiz: Energy and Matter

Which statement is correct about the relationship between plants and animals?Select the correct answer. *

• Plants depend ONLY on animals for food.

• Animals depend ONLY on plants for food.

• Plants do not depend upon animals to survive

• Plants and animals depend on matter produced by the other to survive.

Prairie dogs are a type of rodent that live in large groups. They eat grass and seeds. Which ecosystem would best meet the needs of the prairie dog?Select the correct answer. *

• desert

• grassland

• tundra

• forest

The food chain shows organisms in an oak tree nature preserve.oak leaves → caterpillar → blue jay. A fungus is spreading on the oak trees. What will most likely happen to the organisms in this food chain? *

• population will increase

• population will decrease

Merriam learned that wolves and elk are a part of the same food chain.grass → elk → wolf. She wrote how matter is transferred in the ecosystem where the elk and wolves live. Not all of her sentences contain true statements. Select the two sentences that are false. *

• Matter moves from the grass to the elk and then to the wolf.

• When these organisms die, decomposers break down the matter in them and return it to the soil.

• Animals such as elk and wolves take in matter from the environment as water and air.

• Plants do not take in matter from the environment.

• The elk release gases that the wolves need to breathe.

The diagram shows a partial food web. Select the sentences supported by the food web diagram. *

• Owls are scavengers

• Robins are omnivores

• Grass is an energy source drawn from all organisms to the mushrooms.

• An increase in the plant population would benefit the whole ecosystem

• Arrows could be drawn from all organisms to the mushrooms