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← Nature & AnimalsWhich mechanism causes continuous water relocation when a plant's transpiration stream diminishes?
A)Guttation via positive root pressure✓
B)Evaporation using negative leaf tension
C)Adhesion prevents uninterrupted gravity flow
D)Desiccation through stomatal hydroregulation
💡 Explanation
Guttation via root pressure occurs because hydrostatic pressure builds in root xylem, thereby forcing water out of leaf hydathodes, rather than relying solely on the transpiration stream; therefore, water relocates at diminished transpiration compared to tension cohesion.
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