Photosynthesis and Cellular Respiration Review

A deer consumes most of the leaves on a plant. What is the most immediate effect on the plant?

• The plant’s rate of transpiration will increase because there will be more areas exposed to the atmosphere.

• The plant’s height will decrease because it will be unable to hold itself upright.

• The plant’s ability to take in nutrients through the soil will be increased.

• The plant’s ability to make and store food will be limited

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A scientist places a plant in a chamber under grow lights for 24 hours. The scientist measures the rates of photosynthesis and respiration in the plant by sampling the air in the chamber. She finds that the amount of oxygen is higher than the amount of carbon dioxide. Which statement best explains her observations?

• Photosynthesis occurred, but respiration did not.

• Respiration occurred, but photosynthesis did not.

• The rate of respiration was greater than the rate of photosynthesis.

• The rate of photosynthesis was greater than the rate of respiration.

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How does photosynthesis compare with cellular respiration in plants?

• Photosynthesis requires sunlight, but cellular respiration does not.

• Cellular respiration requires sunlight, but photosynthesis does not.

• Carbon dioxide is released during photosynthesis, while oxygen is released during cellular respiration.

• Oxygen is absorbed during photosynthesis, while carbon dioxide is absorbed during cellular respiration.

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How do photosynthesis and cellular respiration compare?

• . They both use oxygen to produce carbon dioxide.

• They both use carbon dioxide to produce oxygen.

• Photosynthesis uses oxygen and produces carbon dioxide, while respiration uses carbon dioxide and produces oxygen.

• Photosynthesis uses carbon dioxide and produces oxygen, while respiration uses oxygen and produces carbon dioxide.

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Why is cellular respiration important to living organisms?

• It circulates water and nutrients throughout plants and animals.

• It breaks down sugar to provide organisms with energy.

• It allows organisms to create food without sunlight.

• It creates and stores food for later use.

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Which statement best explains the process of transpiration in plants?

• Oxygen and water vapor are absorbed by roots.

• Oxygen and water vapor are absorbed by leaves.

• Oxygen and water vapor are released from roots.

• Oxygen and water vapor are released from leaves.

How does photosynthesis most contribute to respiration?

• It provides water

• It provides oxygen

• It provides minerals

• It provides nutrients

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Why do plants perform cellular respiration?

• to create energy from sugars

• to release energy from sugars

• to create sugars that can be converted into energy

• to release sugars that can be converted into energy

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Which plant structures are responsible for capturing sunlight for photosynthesis?

• chloroplasts

• roots

• stems

• stomata

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Which action would most likely increase the rate of photosynthesis in a plant?

• moving the plant to a sunny area

• moving the plant to a shaded area

• cutting off most of the plant’s leaves

• removing the soil the plant is growing in

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