Ecosystems Quiz

Which of these is an example of an ecosystem?

• A car

• A prairie

• A book

• A computer

What are the three main roles for living things in an ecosystem?

• Producer, consumer, decomposer

• Teacher, student, principal

• Leader, follower, helper

• Builder, destroyer, creator

Why is a grassland ecosystem more than just grass?

• It only has grass and water

• It includes other plants, mammals, insects, and earthworms

• It is made of only rocks

• It has only nonliving things

What are decomposers responsible for in an ecosystem?

• Breaking down waste products and dead tissue of plants and animals

• Producing food for all animals

• Hunting other animals for food

• Providing shelter for animals

What is the main source of energy in almost all ecosystems?

• The sun's energy

• Wind energy

• Water energy

• Soil nutrients

What happens to nutrients when consumers are not eaten?

• They are transferred to decomposers through decaying tissues

• They disappear from the ecosystem

• They turn into water

• They become sunlight

What does an ecosystem's health depend on?

• A delicate balance between all members and their environment

• The number of animals in the ecosystem

• The amount of rainfall in the area

• The size of the ecosystem

Which of the following is a natural thing that can disturb ecosystems?

• Changing climate

• Building houses

• Cutting down trees

• Driving cars

What is an invasive species?

• A living thing that spreads through an ecosystem where it did not exist before

• A plant that grows very quickly

• An animal that eats only plants

• A species that is always helpful to the ecosystem

Explain how human actions can lead to the spread of invasive species.

• By bringing new animals or plants to an area where they did not exist before

• By planting only native plants

• By cleaning up pollution

• By building more parks