What is the function of companion cell?

Providing energy to sieve elements for active transport

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Loading of sucrose into sieve elements by passive transport

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Providing water to phloem

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Loading of sucrose into sieve elements

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Solution

The correct option is C
Providing water to phloem

Companion cells are found along with sieve tube elements in the phloem. The main function of companion cells is to maintain pressure gradient in the sieve tube elements.

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Loading of sucrose into sieve tube cells is by (i)_______ and the unloading of sucrose from the sieve tube cells is by (ii)________.

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