Multiple Choice
Stomata generally close in response to ____.
A) the release of abscisic acid by the roots
B) a drop in CO2concentration in leaf air spaces
C) exposure to red light
D) a drop in O2concentration in leaf air spaces
E) an increase in CO2concentration in the leaf air spaces
Correct Answer:
Verified
Correct Answer:
Verified
Q22: Water that moves through living cells in
Q23: Approximately _ percent of water that enters
Q24: Translocation in sieve tubes requires passive transport.
Q25: Loading of most carbohydrates produced by photosynthesis
Q26: Discuss permeability in plant cell walls.
Q28: The principal driving force for guttation is
Q29: Individual plant cells typically gain or lose
Q30: Most mineral ions that plants need are
Q31: Companion cells load most of the carbohydrates
Q32: Sieve elements differentiate through a process called