Question

-In a relatively drought prone environment why are tracheids advantageous over vessels? In the same environment would you expect an angiosperm or a gymnosperm to grow taller?

-Describe the importance of vessel/tracheid diameter in the resistance to cavitation and resistance to water flow. Explain using water potential terms how a stomatal opens and closes.

-Draw a bordered pit and explain how variations in its structure create “tighter” and “looser” seals between water conducting elements