Biology · Plant Physiology
Which component of water potential is primarily altered during phloem unloading at the sink, leading to water movement back into the xylem?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Matrix potential (Ψm) decreases significantly
- 2Gravitational potential (Ψg) increases significantly
- 3Pressure potential (Ψp) decreases as turgor pressure drops✓
- 4Solute potential (Ψs) increases (becomes less negative) only
Correct answer
Pressure potential (Ψp) decreases as turgor pressure drops
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