Exam 36: Resource Acquisition and Transport in Vascular Plants

When an animal cell is placed in a hypotonic solution and water enters the cell via osmosis, the volume of the cell increases until it bursts. This does not happen to plant cells, because ________.

The physical property that predicts the direction of water flow is referred as ________.

During the nighttime, due to lack of transpiration, the water potential within the vascular cylinder ________.

The high surface-to-volume ratio in leaves aids in ________.

Which of the following primarily enters a plant somewhere other than through the roots?

Bulk flow is much faster than diffusion or active transport. Peak velocities in the transport of xylem sap can range from ________ for trees with wide vessel elements.

Which one of the following ions plays a critical role in the opening and closing of stomata?

What is the advantage of having small, needlelike leaves?

The apoplast in plant tissues consists of ________.

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

How does a flaccid cell differ from a turgid cell?

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

Which structure or compartment is part of the symplast?

Which structure or compartment is separate from the apoplastic route?

Which of the following supports the finding that sugar translocation in phloem is an active (energy-requiring)process?

Formation of the curved upper surface, such as occurs in a tube filled with water, is an important factor in plant water movement. A curved upper surface is created by ________.

If you place flaccid plant cells in pure water, water ________ into cell because it has ________.

The value for Ψ in root tissue was found to be -0.15 MPa. If you take the root tissue and place it in a 0.1 M solution of sucrose (Ψ = -0.23 MPa), the net water flow would ________.

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?

Plants adapted to arid environments are referred to as ________.