Biology · Plant Transport Mechanisms
If a plant organ that typically functions as a sink (e.g., a developing seed or tuber) mobilizes its reserves and becomes a source during germination, what primary physiological change occurs in phloem transport?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Permanent degradation of sieve tube elements
- 2Immediate stoppage of root osmosis
- 3Complete cessation of xylem sap movement
- 4Reversal of the direction of phloem translocation flow✓
Correct answer
Reversal of the direction of phloem translocation flow
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