In phloem
A. Transport of sugar is essentially unidirectional.
B. Phloem sap mainly consists of water and sucrose.
C. Loading and unloading of sugar is a passive process.
D. Translocation from the source to the sink occurs by mass flow.

A and C are incorrect

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Only D is correct

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A and B are correct

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B and C are incorrect

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Solution

The correct option is A A and C are incorrect
The loading and unloading of sugar is an active process. The transport of sugar is bidirectional, not unidirectional.

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Similar questions

Assertion: The phloem sap moves towards the sink.

Reason: The process of loading at the source produces a hypotonic condition in the phloem.

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