Which outcome occurs when oxygen outcompetes carbon dioxide within a plant's bundle sheath cells?

💡 Explanation

Photorespiration occurs due to oxygen outcompeting carbon dioxide, causing the enzyme rubisco to bind with O2 rather than CO2, resulting in the breakdown of RuBP and decreased photosynthetic output. Therefore photorespiration occurs, rather than CO2 fixation, because rubisco's affinity changes.

• Which mechanism enables soaring birds to maintain altitude in ridge lift conditions?
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• Which impact results when elevated atmospheric carbon dioxide causes partial stomatal closure in plants?
• Which risk increases when CAM plants fix CO2 at night in arid climates?
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• Which consequence results from disrupting plant xylem embolism repair?