Which risk increases when persistent drought limits water availability in C4 plants?

💡 Explanation

When drought limits water, C4 plants close stomata to prevent water loss, which reduces CO2 intake. Therefore photorespiration increases because RuBisCO binds more readily to O2 under low CO2 concentrations, thereby slowing the photosynthetic rate, rather than nitrogen fixation, chlorophyll synthesis, or vascular erosion which rely on independent processes.

• Which nutritional consequence results when honeybee 'waggle dance' communications degrade, impacting resource collection efficiency?
• Which morphological defect arises if imaginal disc apoptosis is inhibited during Drosophila metamorphosis?
• Which risk increases when punctured avian air sacs lead to subcutaneous emphysema during sustained flight?
• Which disruption diminishes oxygen uptake efficiency during opercular pumping in fish gills?
• Which outcome occurs when juvenile birds’ celestial navigation is limited?
• Which adaptation enables albatrosses to maintain prolonged dynamic soaring flight with minimal energy expenditure?