Which outcome occurs when a prolonged drought causes excessive abscisic acid production?

💡 Explanation

When drought occurs, abscisic acid (ABA) accumulation triggers stomata closure because ABA induces guard cells to lose turgor via ion efflux, causing stomata pores to narrow, reducing transpiration. Therefore stomata closure occurs, rather than increased rubisco activity, enhanced chlorophyll synthesis, or accelerated translocation which require ample water.

• Which consequence results when damage impairs lamellar structure?
• Which metabolic cost impacts productivity in agricultural C3 plants facing increasingly high temperatures?
• Which risk sharply increases as albatross feathers degrade during an extended transoceanic foraging trip?
• Which risk increases when transpiration demand exceeds root water uptake?
• Which physiological challenge increases for freshwater fish adapted to rapid salinity increases?
• Which consequence results when a moth larva experiences premature ecdysone release?