Food Web and Ecosystem Quiz

Why is the ability to move important to animals?

• It helps them find food.

• It helps them stay warm.

• It helps them obtain oxygen.

• It helps them differentiate cells.

What form of energy is stored in food?

• heat

• light energy

• energy of motion

• energy in molecules

How do organisms get the energy they need?

• Plants get energy from fertilizers. Animals get energy from water.

• Plants get energy from the soil. Animals get energy directly from sunlight.

• Plants do not need energy because they do not move. Animals get energy from food.

• Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.

Dylan drew a diagram showing that certain organisms eat other organisms. The diagram included a caption stating that the amount of available energy decreases with each organism that is eaten. How is this explained by the law of conservation of energy?

• Living things change energy into matter.

• Some of the energy is used for life processes.

• Some energy disappears when living things are eaten.

• Only small amounts of energy can be destroyed at a time.

Carbon exists in many forms on Earth. The diagram shows part of the carbon cycle. What does this diagram show?

• It shows how matter can pass through an ecosystem.

• It shows each step in the correct order that carbon must pass through.

• It shows how more carbon is constantly being formed and passed along.

• It shows how carbon is running out because it is all being used up by animals.

Worms break down dead plants in the soil to release nutrients. Which property of nutrients shows that they are matter?

• Nutrients are warm.

• Nutrients have mass.

• Nutrients can do work.

• Nutrients contain energy.

What starting materials do plants use to make food?

• soil and water

• water and oxygen

• carbon dioxide and water

• carbonic acid and nitrogen

What is the source of energy for plant and animal cells?

• soil

• oxygen

• consumers

• carbon-based molecules

What are the products of photosynthesis?

• glucose and oxygen

• carbon dioxide and water

• chlorophyll, protein, and DNA

• plant stems, leaves, and root systems

Animals breathe in oxygen and breathe out carbon dioxide. Where does the carbon dioxide come from?

• it is produced during photosynthesis

• it is a product of cellular respiration

• it is needed to create energy for cells

• it is created when plants are consumed