What are the structures represented by W, X, Y and Z and what is the direction of flow of solution along W?
A) Phloem - W Xylem - X Roots - Y Leaves - Z Direction of flow along W -from Z to Y
B) Phloem - W Xylem - X Roots - Z Leaves - Y Direction of flow along W -from Y to Z
C) Phloem - X Xylem - W Roots - Z Leaves - Y Direction of flow along W -from Z to Y
D) Phloem - X Xylem - W Roots - Z Leaves - Y Direction of flow along W -from Y to Z
Correct Answer: B
Solution :
[b] Y represents the site of photosynthesis, where more glucose has been manufactured, whilst there is less glucose in the medium where the roots Z are placed in. W thus is the phloem where the photosynthates are transported from the leaves Y to the roots Z. X is the xylem which helps in the transportation of water from the roots Z to the leaves Y.
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