WorksheetsCarbon Cycle Quiz
Total questions: 10
Worksheet time: 5mins
The diagram shows a model that Peter made of the carbon cycle. Which mistake did Peter make in the model?
Plants do not lose carbon through respiration.
The burning of fossil fuel does not release carbon.
Organisms that decay do not deposit carbon in the soil.
Animals do not breathe carbon dioxide from the atmosphere.
Carbon is essential for life. Every part of the food chain plays a part in the cycle that transfers carbon between living organisms and the environment. Which organisms take in carbon from the environment to make it available for living organisms?
primary consumers
decomposers
producers
secondary consumers
Producers, consumers, and decomposers work together to conserve the carbon on Earth. Which statement is the correct model of the carbon cycle?
Producers use carbon to make food, consumers take in carbon from the organisms they eat, and decomposers break down remains and release carbon.
Producers produce carbon from the sun, consumers consume carbon from the organisms they eat, and decomposers break down remains and release carbon.
Producers make organisms that produce carbon, consumers eat and release the carbon from their food, and decomposers make carbon from the producers.
Producers take the carbon from carbon dioxide in the air, while consumers and decomposers use carbon to produce carbon-containing molecules like sugars.
Photosynthesis and cellular respiration demonstrate the conservation of mass and energy. What do chloroplasts produce that mitochondria use to make chemical energy?
oxygen and carbon dioxide
carbon dioxide and glucose
oxygen and glucose
water and oxygen
What happens to light energy from the Sun when it reaches the surface of Earth?
The light energy is multiplied when it reaches the plants on Earth.
The light energy is destroyed when plants are eaten by herbivores.
The light energy is transformed to chemical energy by photosynthesis.
The light energy is converted to potential energy by cellular respiration.
How does carbon dioxide enter the atmosphere?
Carbon dioxide is only released into the atmosphere by human activities.
Carbon dioxide is only released into the atmosphere by animals and bacterial decomposers.
Carbon dioxide is only released into the atmosphere by plants, animals, and bacterial decomposers.
Carbon dioxide is released into the atmosphere by plants, animals, bacterial decomposers, and human activities.
A student is drawing a model of the carbon cycle. Which caption should he include to explain how herbivores contribute to the carbon cycle from the food they eat?
Herbivores eat plants, producing carbon dioxide during cellular respiration that is released into the atmosphere.
Herbivores eat plants, producing carbon dioxide during photosynthesis that is released into the atmosphere.
Herbivores use carbon dioxide from the atmosphere to produce oxygen during cellular respiration.
Herbivores use oxygen from the atmosphere to produce carbon dioxide during photosynthesis.
Which statement about the carbon cycle is most true?
Energy is destroyed when organic matter decays.
The total mass of carbon on Earth is always increasing.
Carbon is lost from the cycle when it enters the atmosphere.
Carbon changes form, but the total amount on Earth remains the same.
Which of the following statements is most accurate?
A specific and limited amount of carbon exists on Earth, and it moves through living and nonliving materials through the carbon cycle.
The amount of carbon in the universe cycles, gradually increasing as it moves up the food chain, and decreasing until the next phase of the cycle.
Carbon flows through the food chain as animals eat it, then decomposes and is permanently removed from the system when the food chain is complete.
Carbon enters Earth's atmosphere when animals exhale, then moves into space where its amount steadily increases, and finally moves back into Earth's atmosphere to be used again.
During photosynthesis, plants absorb carbon dioxide and water, and produce oxygen and glucose. Which statement best describes how this process follows the law of conservation of mass?
The volume of water used by this process is equal to the volume of water released from plant leaves at night.
The amount of carbon dioxide gas absorbed by one plant is equal to the amount of oxygen and glucose it produces.
The cells in the plant absorb the same amount of energy from the Sun that humans need when burning sugars during digestion.
The number of oxygen atoms in the carbon dioxide and water used by this process equals the total number of oxygen atoms produced by the plant.
