Read the description of the pressure bomb on the handout pro

Read the description of the pressure bomb on the handout provided, and answer the following. If Plant A exhibits greater water tension titan Plant B as measured by a pressure bomb, which plant has the more negative leaf water potential, and how could you tell?

Solution

Water potential define the water movement inside the plant. As we know that their is water potential difference between soil,root,stem,and leaf at last atmosphere. Water will move toward negative water potential.There is greator negative potential in leaf in case of normal process. Beacuse of that water moves from Soil to root, root to stem and Stem to leaf.

As per statement in question their is greater water tension in Plant A in comparison to plant B. This tension arises beacuse of greater water loss but it happen only in that case when there is water loss from leaf is less as compare to root system. So their is greater negative leaf water potential in inside Plant B it also experiencing less water tension.

Beacuse negative water potential in leaf is normal condition when water moves fom root to stem and stem to leaf and leaf to atmosphere(If atmosphere have greater water potential as compare to leaf).

So answer is Plant B