Exam 36: Resource Acquisition and Transport in Vascular Plants

Plants do not have a circulatory system like that of some animals. If a water molecule in a plant did "circulate" (that is, go from one point in a plant to another and back in the same day), it would require the activity of ________.

Which of following ions play the primary role in basic transport processes in plant cells?

In xerophytes, ________ are referred to as crypts.

Solute potential in a cell is also called ________.

Ignoring all other factors, what kind of day would result in the fastest delivery of water and minerals to the leaves of an oak tree?

Which of the following is an adaptation that enhances the uptake of water and minerals by roots?

The water lost during transpiration is a side effect of the plant's exchange of gases. However, the plant derives some benefit from this water loss in the form of ________.

The plant hormone ________ causes stomatal closures in drought stress conditions.

The symplastic route can transport ________.

Most of the water taken up by a plant is ________.

Photosynthesis ceases when leaves wilt, mainly because

Water potential is generally most negative in which of the following parts of a plant?

What is the function of proton pumps localized in the plant plasma membrane?

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 ________.

Active transport of amino acids in plants at the cellular level requires ________.

In the pressure-flow mechanism, loading of sucrose from companion cells to sieve-tube elements takes place through ________.

Which of the following contribute to the surface area available for water absorption from the soil by a plant root system? I root hairs II endodermis III mycorrhizae IV fibrous arrangement of the roots

The movement of water across biological membranes can best be predicted by ________.

Which one of the following does not correctly match the form with its function?

Which of the following are important components of the long-distance transport process in plants? I the cohesion of water molecules II a negative water potential III the root parenchyma IV the active transport of solutes V bulk flow from source to sink