Exam 36: Resource Acquisition and Transport in Vascular Plants

A plant cell with a ΨS of -0.65 MPa maintains a constant volume when bathed in a solution that has a ΨS of -0.30 MPa and is in an open container. The cell has a

Active transport involves all of the following except the

Photosynthesis ceases when leaves wilt, mainly because

Which structure or compartment is not part of the plant's apoplast?

Which of the following would tend to increase transpiration?

The symplast transports all of the following except

Movement of phloem sap from a source to a sink

A water molecule could move all the way through a plant from soil to root to leaf to air and pass through a living cell only once. This living cell would be a part of which structure?

A primary result for stomatal closure on a hot, dry day would be

The following photo shows a strawberry leaf displaying guttation. Answer the following question regarding guttation. -What is the main cause of guttation in plants?

All of the following normally enter the plant through the roots except

Compared to a cell with few aquaporins in its membrane, a cell containing many aquaporins will

Which of the following best explains why very few CAM plants are tall?

Xylem vessels, found in angiosperms, have a much greater internal diameter than tracheids, the only xylem-conducting cells found in gymnosperms. The tallest living trees, redwoods, are gymnosperms. Which of the following is an advantage of tracheids over vessels for long-distance transport to great heights?

If ΨP = 0.3 MPa and ΨS = -0.45 MPa, the resulting Ψ is

What drives the flow of water through the xylem?

Assume that a particular chemical interferes with the establishment and maintenance of proton gradients across the membranes of plant cells. All of the following processes would be directly affected by this chemical except

Which of the following would be least likely to affect osmosis in plants?

Which cells in a root form a protective barrier to the vascular system where all materials must move through the symplast?

If isolated plant cells with a water potential averaging -0.5 MPa are placed into a solution with a water potential of -0.3 MPa, which of the following would be the most likely outcome?