The phloem of angiosperms differs from that o | vedclass

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(B) Companion cells are thin-walled,elongated cells that are connected to sieve tube elements via plasmodesmata within the phloem. They are a characte

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Companion cells

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(B) Companion cells are thin-walled,elongated cells that are connected to sieve tube elements via plasmodesmata within the phloem. They are a characteristic feature of angiosperms and play a crucial role in regulating the metabolic activities of sieve tube elements through their own nucleus. In contrast,pteridophytes and gymnosperms (other vascular plants) lack companion cells and instead possess specialized cells known as albuminous cells.

The phloem of angiosperms differs from that of other vascular plants by the presence of

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