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Question

Choose the correct option(s) with respect to the transportation in plants.

A
Xylem transports water and minerals.
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B
Flow in xylem is unidirectional.
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C
Flow in phloem is unidirectional.
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D
Flow in phloem is bidirectional.
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Solution

The correct option is D Flow in phloem is bidirectional.
The transport system of plants consist of xylem and phloem.
In xylem, the flow is unidirectional, i.e., it transports water and minerals from the roots to other parts of the plant only in one direction (upwards).
Phloem transports food from the leaves to all parts of the plant. So the flow is bidirectional(upwards and downwards).

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