Exam 36: Resource Acquisition and Transport in Vascular Plants

The following factors may sometimes play a role in the movement of sap through xylem.Which one depends on the direct expenditure of ATP by the plant?

Which of the following is a correct statement about sugar movement in phloem?

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

Some botanists argue that the entire plant should be considered as a single unit rather than a composite of many individual cells.Which of the following cellular structures cannot be used to support this view?

Which of the following is not an important component of the long-distance transport process in plants?

Photosynthesis ceases when leaves wilt,mainly because

Which of the following statements is false concerning the xylem?

All of the following are plant adaptations to life on land except

Long-distance electrical signalling in the phloem has been shown to elicit a change in all of the following except

A plant developed a mineral deficiency after being treated with a fungicide.What is the most probable cause of the deficiency?

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

What drives the flow of water through the xylem?

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

One is most likely to see guttation in small plants when the

As a biologist,it is your job to look for plants that have evolved structures with a selective advantage in dry,hot conditions.Which of the following adaptations would be least likely to meet your objective?

Which of the following experimental procedures would most likely reduce transpiration while allowing the normal growth of a plant?

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

What is the role of proton pumps in root hair cells?

The ________ is responsible for the transport of sucrose to companion cells and sieve tube elements.

Plants and animals can be said to have similar needs,because both require water,food,and minerals for growth and survival.In plants,water enters the root through root hairs and then moves through the root cortex into the vascular tissue and into the shoots.The endodermis,with Casparian strips in the endodermal cells,controls entry into the vascular cylinder. -If a mutation occurred and Casparian strips were not produced in root endodermal cells,what would happen to the plant?