Which outcome occurs when guard cell turgor pressure decreases significantly in plant stomata?

💡 Explanation

When guard cell turgor pressure decreases, stomatal closure occurs because reduced hydrostatic pressure collapses the cell walls, closing the pore and reducing transpiration. Therefore stomatal closure is triggered to minimize water loss, rather than increased CO2 uptake, nutrient transport, or accelerated transpiration—processes that depend on open stomata.

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