Self-Assessment 5.2

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The energy used in chemosynthetic synthesis of carbohydrates is from

sunlight. correct incorrect

CO₂. correct incorrect

electrons from inorganic compounds. correct incorrect

the splitting of water. correct incorrect

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Which of the following happens during the carbon reactions of photosynthesis?

Sugars are broken down to fuel the synthesis of high-energy compounds (ATP). correct incorrect

CO₂ is taken up and synthesized into carbohydrates. correct incorrect

Water is split, releasing electrons that are used to help fuel the synthesis of sugars. correct incorrect

O₂ is taken up, leading to the eventual release of CO₂ from carbohydrates. correct incorrect

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A plant that has acclimatized to low light levels would have which of the following (relative to a plant grown in high light)?

Thick leaves and a high light compensation point correct incorrect

Thick leaves and a low light compensation point correct incorrect

Thin leaves and a high light compensation point correct incorrect

Thin leaves and a low light compensation point correct incorrect

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Low soil water availability can constrain photosynthesis in plants through which of the following?

Decreasing the movement of CO₂ from the atmosphere into the leaf due to stomatal closure correct incorrect

The onset of wilting in leaves correct incorrect

Loss of cooling of the leaf that can result in high temperatures and loss of enzyme function correct incorrect

All of the above correct incorrect

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Which of the following is a general adaptation of plant photosynthesis to low temperatures?

Increasing heat generation by burning carbohydrates correct incorrect

Closing stomates to allow the leaf to heat up in cold temperatures correct incorrect

Synthesizing enzymes that have temperature optima at low temperatures correct incorrect

All of the above correct incorrect