Ecology Unit 1

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.

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 the 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.

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.

Some consumers, such as many flying insects, need large amounts of energy to grow and move from one place to another. How do consumers get energy to function?

• Consumers obtain all of their energy by eating other organisms.

• Consumers obtain some energy from other organisms and some from sunlight.

• Consumers obtain most of their energy by absorbing it from their environments.

• Consumers convert light energy from the sun into chemical energy stored in food.

Which of the following are producers?

• plants

• algae

• some bacteria

• anteaters

What happens to the food after the snail eats it? Choose all that apply.

• The snail breaks apart the food molecules to get energy.

• The snail uses the matter in the food to grow.

• The snail uses the matter in the food to produce its own food.

• The snail uses energy from the sun to make food.

Why do you think the starch molecule shown is a good source of energy for an organism?

• The many bonds in the starch molecule store energy.

• The starch molecule is made of atoms.

• Starch is the only type of molecule that provides energy.

• A starch molecule is made of more than one kind of atom.

Which of these terms best describes animals?

• producer

• consumer

• unicellular

• decomposer