The diagram shows a model to demonstrate the mass flow hypothesis of translocation. In a plant, what are the structures W, X, Y, and Z, and what is the direction of the flow of solution along W?
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Since Y represents concentrated sucrose, it means it has higher amount of sucrose. Leaves would have higher amount of sucrose, as sugar is being synthesized and converted into sucrose in leaves. Sucrose is transported through phloem so W represents phloem, Z represents root because direction of flow of sucrose is from source to sink, where source is leaves and sink are roots in this case. So direction of flow is from Y to Z.
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