Which of the following pathways is able to minimize photorespiration in cactus?*1 pointCrassulacean Acid MetabolismCalvin cycleC4 pathwayC3 pathway
Question
Which of the following pathways is able to minimize photorespiration in cactus?
1 point
- Crassulacean Acid Metabolism
- Calvin cycle
- C4 pathway
- C3 pathway
Solution
The pathway that is able to minimize photorespiration in cactus is Crassulacean Acid Metabolism.
Here's a step-by-step explanation:
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Cacti are plants that are adapted to hot, dry environments where water is scarce.
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To conserve water, cacti have evolved a special type of photosynthesis known as Crassulacean Acid Metabolism (CAM).
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In CAM photosynthesis, the stomata (pores in the leaf surface) are closed during the day to reduce water loss and opened at night to take in carbon dioxide.
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The carbon dioxide taken in at night is stored as a four-carbon acid, which is then used during the day for photosynthesis.
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This process minimizes photorespiration, a process that can waste water and energy, making it ideal for plants like cacti that live in arid environments.
So, the correct answer is Crassulacean Acid Metabolism.
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