5 Written questions
5 Matching questions
- What two reasons cause hydrostatic pressure become negative with a reduction of water in the soil?
- What are aquaporins and why are they important in plants?
- Transpiration is dependent upon what?
- Bulk mass flow is sensitive to changes in what? But as long as there is little change in __ the driving force behind it is mostly affected by what?
- What constitutes your stomatal complex?
- a difference in water vapor concentration in the air spaces in the leaf and the external air
- b guard cells and subsidary cells found in the dumbell shaped guard cells of monocots
- c changes in radius, viscosity, concentration gradient
- d they are integral membrane proteins that form water selective channels. They are faster then travel through the lipid bilayer and can alter the rate of flow but not the direction (still passive). They can also be gated to allow for active regulation of water
- e adhesion and surface tension of water (more negative with increase curvature)
5 Multiple choice questions
- the loss of water. ~97% absorbed by plant, transported and evaporated through the leaf.
- It is the formation of vapor/ gas bubble in flowing water which can rapidly collapse and produce shock waves provding energy to nucleating sites within the xylem.
- type of median, the begging state of the cell (flaccid or turgid), and the pressure
- it is the relative expression of the free energy associated with water, it is the difference between the potential as a given state and the potential of substance at a standard state
5 True/False questions
Transmembrane: → pathway of water moving through a network of cells connected via the plasmodesmata going to the cortex driven by hydrostatic pressure
What properties of water generates the physical forces to pull water up through the plant? → surface tension, adhesion and cohesion. the capillarity of a liquid
What is soil hydraulic conductivity? → the ease at which the water moves through the soil (remember spaces between soil particles)
What is emboli? → a layer on the outside of the epidermis that is not water permeable
Specialized arrangements of what in guard cells plays a role in the opening and closing of the stomates? → they are integral membrane proteins that form water selective channels. They are faster then travel through the lipid bilayer and can alter the rate of flow but not the direction (still passive). They can also be gated to allow for active regulation of water