Ecosystems Review

Place the correct ecosystem into the appropriate cells based on the mammals, birds and plants.

kangaroo rat red-tailed hawk cactus

• forest

• tundra

• desert

• ocean

Place the correct ecosystem into the appropriate cells based on the mammals, birds and plants

gray squirrel screech owl american sweetgum

• forest

• grasslands

• desert

• tundra

Which organism is a producer?

• frog

• mushroom

• grass

• lizard

The options below include producer and consumer organisms that live in a pond ecosystem. Select the two producers in the pond.

• algae

• fish

• elodea

• crayfish

The options below include producer and consumer organisms that live in a pond ecosystem. Select the two producers in the pond.

• algae

• fish

• elodea

• crayfish

Which is an example of a decomposer?

• a hawk

• a flower

• a mouse

• a mushroom

Which is most responsible for recycling dead plants and animals in an ecosystem?

• water

• bacteria

• fish

• insects

In a grassland ecosystem, if the population of eagles suddenly decreased, what will most likely be the effect on the rest of the ecosystem?

• The ecosystem will become overpopulated with snakes.

• There will be a decrease in the population of snakes in the ecosystem.

• The nutrition of the soil in the ecosystem will decrease.

• More types of plants will begin growing in the ecosystem.

Which will most likely cause a decrease in predator population?

• An increase in prey population

• A decrease in prey population

• A decrease in decomposers

• An increase in producers

A simple food chain includes hawks, lizards, and insects. Which will most likely happen to the lizard and hawk populations if a pesticide is sprayed to kill the insects, and the lizard and hawk populations cannot find food in this ecosystem?

• Both the lizard population and the hawk population will increase.

• Both the lizard population and the hawk population will decrease.

• The lizard population will increase, but the hawk population will decrease.

• The lizard population will decrease, but the hawk population will increase.