A-LevelBiologyTransport in plantsOct/Nov 2022Paper 2 Q65 Marks
Xylem and phloem are the transport tissues of plants. Both tissues have more than one cell type. The conducting cells of xylem contain xylem sap and those of phloem contain phloem sap. The composition of xylem sap differs from the composition of phloem sap. (a) The main component of xylem sap and phloem sap is water. Explain why water is the main component of xylem sap and phloem sap.
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