Ecosystems Grade 5 Unit Review

Which group of organisms eats other living things in order to survive? (5.L.2.2)

• producers

• consumers

• scavengers

• decomposers

Which is most likely the greatest challenge to organisms living in estuaries? (5.L.2.1)

• the varying levels of salt

• the animal diversity that exists

• the amount of sunlight received

• the changes in water temperature

Which type of ecosystem best removes pollutants from water? (5.L.2.1)

• forest

• desert

• estuary

• grassland

Jason was walking through an ecosystem when he looked up and saw a monkey being chased by a panther. Which type of ecosystem was he most likely visiting? (5.L.2.1)

• rainforest

• deciduous forest

• coniferous forest

• grassland

Which best describes a producer? (5.L.2.2)

• a plant that makes its own food using energy from the sun

• an organism that gets its energy from plants and animals

• the sun because it provides energy for plants

• an organism that gets its energy from only animals

Which way does energy flow in the food chain? (5.L.2.2)

• from the mouse to the grass to the Sun

• from the owl to the mouse to the grass

• from the mouse to the grass to the sun

• from the sun to the grass to the mouse

Compared to the large number of plant species found in a forest ecosystem, which best explains why a desert ecosystem is unable to support a greater variety of plants? (5.L.2.1)

• A desert ecosystem is located too high above sea level for most plants to grow.

• There are fewer animals in a desert, which decreases the need for large varieties of plants.

• There is not enough space available in a desert ecosystem for some plant varieties to grow.

• Most plants that live in a desert ecosystem must be able to conserve water for long periods of time.

Which best completes the graphic organizer? (5.L.2.1)

• estuary

• creek

• river

• stream

In a forest ecosystem, which has the most direct access to the main energy source? (5.L.2.2)

• producer

• consumer

• scavenger

• decomposer

Bald eagles were once in danger of extinction. Since being protected by laws, the bald eagle population has grown. Bald eagles eat a variety of organisms including snakes. How did the increase in the population of bald eagles most likely affect snakes living in eagle habitats? (5.L.2.3)

• The increase reduced the number of snakes.

• The increase forced the snakes to change habitats.

• The increase made the snakes find new food sources.

• The increase caused the snakes to develop new traits.