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← Nature & AnimalsWhich process impairs nutrient transport when tree phloem sieve tubes experience aphid infestation?
A)Stomatal closure limits CO2 uptake
B)Hydraulic resistance disrupts turgor flow✓
C)Chloroplast degradation reduces carbohydrates
D)Root-microbe symbiosis collapses
💡 Explanation
When aphid infestation punctures phloem, hydraulic resistance develops within the sieve tubes because sap leaks while aphid stylets are acting as flow obstructions. Therefore disruption to turgor flow is caused rather than CO2 restrictions, decreased CHO production, or root symbioses which operate through diffusion or active transport.
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