Companion cells in plants are associated with

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(C) Companion cells are specialized parenchyma cells that are closely associated with sieve tube elements in the phloem of angiosperms.They are connec

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Sieve elements

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(C) Companion cells are specialized parenchyma cells that are closely associated with sieve tube elements in the phloem of angiosperms.They are connected to sieve tube elements through plasmodesmata.Companion cells maintain the pressure gradient in the sieve tubes and assist in the loading and unloading of sugars (sucrose) into the sieve elements.

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