The phloem transports sugars from leaves to roots. The xylem is a transport tissue ... living cells. Starch is stored in the symplast. Axial parenchyma, ray parenchyma, sieve tubes, companion ...

Save guides, add subjects and pick up where you left off with your BBC account. Phloem consists of living cells. The cells that make up the phloem are adapted to their function: ...

Dissolved sugars and amino acids can be transported both up and down the stem. Companion cells, adjacent to the sieve tubes provide energy required to transport substances in the phloem.