Unit 6 Quiz Review

What is the primary function of photosynthesis?

• To release carbon dioxide into the atmosphere

• To absorb oxygen from the air

• To convert the sun's energy into chemical energy (food)

• To break down sugars for energy

What is the role of decomposers in a food chain?

• Hunt and eat other organisms

• Consume producers

• Return nutrients to the soil

• Make their own food

Nuclear energy has two disadvantages. What are they?

• Possible radioactive accidents and power outages

• Possible nuclear explosions and power outages

• Waste storage and possible radioactive accidents

• High cost and waste storage

Why is bituminous coal used more than anthracite?

• It burns hotter and longer than other stages of coal.

• It is easier to find under the surface.

• It burns cleaner than other stages of coal.

• It is more abundant than other types of coal.

Describe the roles of producers, consumers, and decomposers in an ecosystem, and explain why all three are necessary for a healthy and balanced environment.

• Producers create energy, consumers eat producers, decomposers recycle nutrients.

• Producers eat consumers, consumers decompose matter, decomposers produce energy.

• Producers decompose matter, consumers recycle nutrients, decomposers create energy.

• Producers and consumers are the same, decomposers are not needed.

What percentage of the world's energy supply is made up of nonrenewable resources?

• Over 85%

• Less than 20%

• Around 50%

• Exactly 75%

Jason loves salads. Some of his favorite ingredients are tomato, lettuce, cheese, olive, salsa, and chicken. Which of the following is not true?

• Jason is a primary consumer of tomato, lettuce, cheese, and olive.

• Jason’s salad has products from autotrophs and heterotrophs in it.

• Jason’s salad is made mostly of products from producers.

• Jason’s salad is made only of consumers.

Which of the following is not a consumer in this food web?

• Frog

• Bean plant

• Fox

• Snake

Which of the following organisms will NOT be directly affected if the trout is removed from this food web?

• Dragonfly

• Fox

• Human

• Snake

Which of the following is not a heterotroph in this food web?

• grass

• frog

• dragonfly

• bacteria