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16 Cards in this Set
- Front
- Back
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If you were to prune the shoot tips of a plant, what is the effect on the plant and the leaf area index? |
Bushier plants; higher leaf area index |
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Which of the following would least likely affect osmosis in plants? |
Receptor proteins in the membrane |
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Active transport involves all of the following except the... |
Diffusion of solute through the lipid bilayer of a membrane |
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Which of the following is not a function of the plasma membrane proton pump? |
Equalizes the charge on each side of a membrane |
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Compared to a cell with few aquaporins in its membrane, a cell containing many aquaporins will... |
Have a faster rate o osmosis |
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A water molecule could move all the way thru a plant from soil to root to leaf to air and pass thru a living cell only once. This living cell would be a part of which structure? |
The Endodermis |
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One is most likely to see guttation in small plants when the... |
Root pressure exceeds transpiration pull |
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Which of the following if responsible for the cohesion of water molecules? |
Hydrogen bonds between the oxygen of one atom and the hydrogen of another atom |
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One would expect to find the highest density of aquaporins in which of the following? |
The plasma membrane of guard cells |
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Which of the following has the lowest water potential? |
Leaf air spaces |
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All of the following normally enter the plant thru the roots except |
CO2 |
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The opening of the stomata is thought to involve |
an increase in the solute concentration of the guard cells |
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Photosynthesis begins to decline when leaves wilt because... |
Stomata close, restricting CO2 entry into the leaves |
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Which of the following are why very few CAM plants are tall? |
They have difficulty moving water and minerals to the top of the plant during the day |
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What is the driving force for the movement of solutes in the phloem of plants |
A difference in the water potential between the source and the sink |
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What is the main cause of guttation in plants? |
Root pressure |
