Question

The cells in vascular and nonvascular plants are both able to get water, but nonvascular plants have different methods than vascular plants. How do these differences affect the height of the plants? In three to five sentences, explain this and be sure to describe how each type of plant gets water to its cells (4 points)

Answer 1

Vascular plants pull water up from the soil through roots into specialized vascular tissue called xylem; evaporation from leaves (transpiration) creates a continuous cohesion-tension pull that can move water long distances, allowing stems and trunks to grow tall. Nonvascular plants (mosses, liverworts) lack xylem and true roots, using rhizoids and relying on diffusion, osmosis, and short-range capillary movement across cell surfaces to get water. Those passive, short-distance processes work only when the plant is small and kept moist, so nonvascular plants remain low to the ground. In short, efficient long-distance transport in vascular plants enables great height, while diffusion-limited transport confines nonvascular plants to small sizes.