Which row in the table is the correct description for the transpiration stream?
| Structure involved | Substance(s) transported | Direction of movement | |
|---|---|---|---|
| A | xylem | water and mineral ions | upwards only |
| B | xylem | sucrose and amino acids | upwards and downwards |
| C | phloem | water and mineral ions | upwards only |
| D | phloem | sucrose and amino acids | upwards and downwards |
Row A
Row B
Row C
Row D