Chapter 30

Explain the role of light, potassium ions, and sucrose in stomatal movement.

Explain how each of the following factors affects the rate of transpiration: temperature, humidity, air currents.

Explain the relationship between root pressure and guttation.

Explain the benefit of hydraulic redistribution to plants.

The uptake of inorganic nutrients is an energy-requiring process. Explain.

Distinguish between apoplastic and symplastic phloem loading.