EGYPTIAN AMERICAN INTERNATIONAL SCHOOLElementary Science Department

SEMESTER 1 GRADE 4

Name:Date: Class:

Homework sheet (4.1)Q1: Choose the correct answer:

1. 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.

2. 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.

3. 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.

4. This picture shows the life cycle of a frog. How does a frog’s niche change when it is fully grown?

The frog uses legs to move and live on land.The frog uses a tail to move and live on land.The frog uses legs to swim and live in water.The frog uses a tail to swim and live in water.

5. 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.

Q2: Match:

______1. a group made up of the same type of individuals in the same ecosystem

A. Ecosystem

_____2. the physical part of the ecosystem that meets the needs of an organism

B. Community

_____3. any living thing that makes its own food. C. Population

_____4. all the organisms that live in the same place D. Habitat

_____5. an organism’s role in the habitat including the way the organism interacts with the habitat and gets food and shelter

E. Niche

_____6. all the living and nonliving things in an area and their interactions

F. Producer

_____7. a living thing that breaks down waste and the remains of plants and animals for energy

G. Consumer

_____8. an animal that eats plants or other animals to get energy

H. Decomposer

Q3: Answer the following question:

Are blue jays that live in different parts of the United States members of the same population? Explain. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________