The proton pump in plant cells __________.

Atmospheric CO2 has been increasing rapidly since the late 1800s, largely due to human activities. Recall that CO2 enters leaves through stomata and can then be used for photosynthesis. However, transpiration occurs as a result of water evaporating through stomata. How have plants responded to elevated CO2 levels?One prediction of global climate change is that there will be an increase in periods of drought in some regions. Given the data just presented, will plants be more or less likely to survive periods of drought as they are exposed to rising CO2 levels?

Atmospheric CO2 has been increasing rapidly since the late 1800s, largely due to human activities. Recall that CO2 enters leaves through stomata and can then be used for photosynthesis. However, transpiration occurs as a result of water evaporating through stomata. How have plants responded to elevated CO2 levels?In the year 1915, the stomatal conductance of oak was approximately how many times higher than that of pine? How about in the year 2010?

Atmospheric CO2 has been increasing rapidly since the late 1800s, largely due to human activities. Recall that CO2 enters leaves through stomata and can then be used for photosynthesis. However, transpiration occurs as a result of water evaporating through stomata. How have plants responded to elevated CO2 levels?Assuming that the CO2 level continues to increase with time, how likely are plants to be able to continue to adapt by adjusting stomatal conductance?

The purpose of the xylem is to __________.

A plant cell placed in a solution with a higher water potential will __________.

The water potential of a cell is defined by the equation Ψ = Ψ_S + Ψ_P. Which of the following statements is true?

A cell has a pressure potential of 0 and a solute potential of -0.7 MPa. What is its water potential?

In a turgid cell, __________.