Unit 2 Lesson 2 Lesson Check: Interactions of Living Things

The picture shows living things in an ecosystem. Which organism is a producer?

• mouse

• eagle

• grass

• caterpillar

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Predators hunt _______________ and help control the size of the populations of these organisms.

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An animal who hunts and kills its own food is called a(n) ______.

• predator

• scavenger

• producer

• omnivore

An _______________ species can harm the environment by growing and spreading quickly in an area.

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This animal is a predator. If a predator is removed from an ecosystem, then ______.

• the population of predators will likely increase.

• the population of prey will increase.

• the population of prey will decrease.

• the population of predators will not be affected.

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Which are living parts of an ecosystem? Select all that apply.

• fungus

• Sun

• tree

• fly

• rock

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7) Which of the following are biotic factors in an ecosystem?

• Sunlight, Water, Soil

• Plants, Animals, Microorganisms

• Temperature, Humidity, Wind

• Rocks, Minerals, Air

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Water is factor.

• an abiotic
• a biotic

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Which of the following is not an abiotic factor?

• rocks

• air

• animals

• water

Hawks eat mice and birds. If hawks come into the forest area, what will happen in the food web? Click all that apply.

• There will be fewer plants consumed.

• The population of owls will increase.

• The population of foxes may decrease.

• The population of grasshoppers will decrease.

• The population of mice will decrease.

Answer explanation

because hawks eat one of the two animals that foxes depend on, the fox

population may decrease if they do not have enough food to support the population.

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