LockeD! - 5.12A - Interaction with Ecosystem #1

Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants?

• By returning nutrients to the soil

• By releasing oxygen into the air

• By making space for new animals

• By decreasing the population of herbivores

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In the fall and winter many trees lose their leaves in response to cooler temperatures and –

• a decrease in average wind speed

• fewer hours of daylight

• an increase in humidity

• more direct sunlight

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The African baobab tree has a huge trunk that can store as much as 100 kiloliters of water. This adaptation would be an advantage in a climate that is very—

• cold

• dry

• windy

• sunny

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In the diagram, the label Z represents —

• sugar

• carbon dioxide

• nitrogen

• water vapor

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Brightly colored flowers are most often pollinated by—

• wind

• mammals

• rainfall

• insects

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The picture shows two views of a certain fish. How does the appearance of this fish most likely help it survive?

• Prey have little chance of seeing this fish as it approaches head-on.

• The head-on view of this fish attracts predators.

• The narrow body allows this fish to live in deeper water.

• Predators have a hard time seeing the side view of this fish.

A community of living and non-living things that interact is called –

• a life cycle

• a water cycle

• an ecosystem

• an envirosystem

From what part of an ecosystem do plants get carbon dioxide?

• Air

• Soil

• Water

• Sunlight

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Why do scientists classify an ecosystem as a type of system?

• It contains living and non-living things

• It is composed of soil, air, and living things

• It is composed of a group of parts working together

• It contains many gases such as oxygen, nitrogen and carbon dioxide

All living and nonliving things that surround an animal are part of its—

• food chain

• life cycle

• ecosystem

• atmosphere

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