what is the use of companion cells in phloem
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it carries food to all parts of the plant
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the companion cells control the activity of sieve tube elements by maintaing pressure gradients in them.Sieve cells do not have a nucleus so they are controlled by the companio cells' nucleus. As they are part of phloem they help in bidirectional conduction of food(mainly) in the plants.
rakesh58450:
thnx!!
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