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← Nature & AnimalsWhich net effect occurs when arbuscular mycorrhizal fungi enable stomatal regulation?
A)Increased transpiration rates and cooling
B)Enhanced soil nutrient uptake efficiency✓
C)Reduced cavitation risk in xylem
D)Decreased carbohydrate translocation demands
💡 Explanation
Enhanced nutrient uptake in plants occurs thanks to the ability of arbuscular mycorrhizal fungi to signal optimal opening / closing of stomata via hormonal changes. Stomatal closure therefore lowers transpirational water loss, rather than simply enhancing rate given fungi, because increased resource availability decreases water loss impact.
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