[2pt] 3. Long-distance transport in phloem is best explained by:
(A) tension-driven flow caused by leaf transpiration
(B) diffusion driven by random molecular motion
(C) buik flow driven by hydrostatic pressure differences between source and sink
(D) active transport of sucrose through xylem vessels
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統計: 尚無統計資料
統計: 尚無統計資料