Which risk increases when a plant shifts from C3 to CAM photosynthetic pathways?

💡 Explanation

When a plant shifts to CAM, temporal separation of carbon fixation via the PEP carboxylase and the Calvin cycle with rubisco is adapted, enabling water conservation but decreasing the rate of daily carbon fixation, thus reducing overall fixation. Therefore, carbon fixation decreases, rather than other options, as CAM optimizes survival under arid condtions.

• Which physiological effect occurs when a mammal experiences vasodilation in response to localized environmental heating?
• Which outcome results when a songbird fledgling's developmental environment lacks exposure to conspecific calls?
• Which mechanism minimizes induced drag when an avian feather barb separates during flight?
• Which outcome occurs when a hibernating marmot prematurely enters a warm microclimate?
• Which outcome increases during avian molt due to feather loss?
• Which process causes skeletal muscles in endotherms under prolonged cold exposure to begin shivering?