問題詳情

47. Transport in plants include all of the following except
(A) absorption of water and minerals from the soil by cells of a root.
(B) that transpiration creates a force within leaves that pulls xylem sap upward.
(C) leaves exchange gases through stomata, taking in the CO2 that provides carbon for photosynthesis and expelling O2.
(D) active transport of sugar from one sieve-tube to the next.
(E) that potassium is uptaken by guard cells during stomatal opening.

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