4th grade Morel Unit 4 lesson 1

Which population is found in a rainforest ecosystem?

• antelopes

• coqui

• elephants

• zebras

In a rainforest, why do fewer plants grow closer to the ground?

• Earthworms eat the plants living on the ground.

• Broad leaves keep rain from reaching ground soil.

• Vines allow little space for ground plants to grow.

• Little light gets through the canopy to the forest floor

Which statement best describes this picture?

• A population of elephants lives in the savanna.

• A community of elephants lives in the savanna.

• Elephants and grasses make up a savanna population.

• Trees and grasses are communities in a savanna ecosystem.

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.

Which identifies the nonliving parts important in all ecosystems?

• air, heat, rocks, water, and soil

• air, water, soil, sunlight, and temperature

• salt, temperature, sunlight, heat, and rocks

• water, soil, sunlight, rocks, and shade

Which statement is true about a community?

• A community is all the same species living in different ecosystems.

• A community is made up of one kind of population living in one place.

• A community is made up of different populations that depend on one another.

• A community is made up of different populations that do not interact with one another.

Ecosystems have producers, consumers, and decomposers. Why are producers important in an ecosystem?

• They produce food for consumers.

• They break down remains of dead plants.

• They produce food for other producers.

• They consume food for other consumers.

What is an ecosystem?

• all the living and nonliving things in an area and their interactions.

• all the organisms that live in the same place

• an organism's role in the habitat including the way the organism interacts with the habitat and gets food and shelter

• Any living thing that produces its own food.

What is a community?

• all the living and nonliving things in an area and their interactions.

• all the organisms that live in the same place

• an organism's role in the habitat including the way the organism interacts with the habitat and gets food and shelter

• Any living thing that produces its own food.

What is a niche?

• all the living and nonliving things in an area and their interactions.

• all the organisms that live in the same place

• an organism's role in the habitat including the way the organism interacts with the habitat and gets food and shelter

• Any living thing that produces its own food.