Which effect occurs when C4 plant stomata close during midday sunlight?

💡 Explanation

When C4 plant stomata close during midday, the initial CO2 fixation by PEP carboxylase continues using stored four-carbon acids because it concentrates CO2 around Rubisco in bundle sheath cells, thus preventing photorespiration. Therefore photosynthesis continues, rather than higher photorespiration or drastic oxygen increases.

• Which outcome sharply declines amphibian egg oxygen uptake during pond eutrophication?
• Which condition prevents plants from producing sufficient proteins?
• Which outcome results when a volcanic eruption heavily deposits ash on nitrogen-limited marine ecosystems?
• Which outcome results when seasonal food abundance influences migratory bird destination selection?
• Which risk increases during high-speed avian flight utilising slotted wings?
• Which outcome occurs when whale baleen plates degrade?