Companion cells are components of the phloem tissue. They remain associated with the sieve tube elements of the phloem tissue. Phloem is a vascular tissue and is present for conduction in vascular plants
Functions of companion cell are as follows:
● Companion cells help in maintaining the pressure gradient of the sieve tube elements and thus help in conduction of food through sieve tubes.
● It plays role in conduction of food.
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