Unit 4: Lesson 1: Organisms Interact in Ecosystems

Which graph shows what can happen to a population when a competitor population moves into its environment?

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Organisms that live in a certain habitat are shown.

Which statement is true about the relationship between the monarch butterfly and the milkweed plant?

• The adult monarch depends on the milkweed plant for shelter.

• The monarch larvae depend on the milkweed plant for energy.

• The monarch larvae hide in the milkweed plant from the hawk.

• The monarch butterfly provides energy for the fire ant and hawk.

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NGSS.MS-LS2-1

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Deer transfer energy to predators.

• True

• False

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Deer get energy from performing photosynthesis.

• True

• False

Deer get energy from eating plants that produce energy by performing photosynthesis.

• True

• False

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Each type of bird makes up a ______________.

• niche

• habitat

• population

The three different types of birds all live in the same ___________.

• niche

• habitat

• population

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NGSS.MS-LS2-2

Each type of bird fills a _______________ in the environment.

• niche

• habitat

• population

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Although the birds eat the same things and live in the same tree they do not need _______________ for resources.

• to compete

• to cooperate

• to survive

Earthworms live in soil. They eat rotting leaves and the remains of dead insects. Wastes from earthworms add nutrients to the soil. Earthworms are food for some birds.

Which statement best describes the niche of an earthworm?

• Earthworms live in soil.

• Soil contains nutrients for plants.

• Earthworms use remains of insects found in soil as food.

• Rotting plants and remains of insects can be found in soil.

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NGSS.MS-LS2-2