In some plants, companion cells become modified into phloem cells that facilitate the short-distance transport of various organic solutes from the symplast into the apoplast.

Question

Quizplus · Accepted Answer

Companion cells assist in the transport of substances within the phloem, but they do not become modified into phloem cells. Phloem cells, such as sieve tube elements, are distinct and specialized for transport, with companion cells supporting their function.

In Some Plants, Companion Cells Become Modified into Phloem Cells