Final answer:
The experiment designed by the student demonstrates the interaction between the xylem and phloem systems by visually tracing the movement of red and blue dyes through the stalk of a chrysanthemum, illustrating the vascular tissues' role in transporting water, solutes, and photosynthates.
Step-by-step explanation:
In the student's experiment, the two plant systems interacting are the xylem and the phloem systems. The xylem is responsible for the transport of water and solutes from the roots through the stems to the leaves, and this can be demonstrated by the movement of the red and blue dyes through the stalk of the chrysanthemum. Xylem vessels have openings in their walls that allow for the transport of water and nutrients in vascular plants. The phloem transports photosynthates, such as sucrose, produced during photosynthesis to various parts of the plant. Both systems rely on water potential and pressure gradients to move substances efficiently throughout the plant. By adding dyes to the water, the student can observe how these substances are transported through the xylem, providing visual evidence for the presence of these openings.