Exam 35: Stem Structure and Transport

Secondary xylem contains all of the following cell types except :

Periderm is produced by:

Vascular bundles of herbaceous _______ stems are arranged in a circle in cross section.

Embryonic shoots located at the tips of stems are covered by ____.

Diagram and label a cross section of (1) a woody stem before the vascular cambium becomes active and (2) a woody stem from the same plant after the vascular cambium has been active for a considerable length of time.

Describe how water potential is related to water movement in a plant.

The driving force for the movement of water in plants is difference in water _______.

One reason that water is able to form unbroken columns is because water molecules are cohesive.

Water is transported vertically through the plant via the process of translocation.

Before being loaded into the phloem for translocation, the carbohydrates produced during photosynthesis must be converted into which molecule?

When cells of the vascular cambium divide, they produce xylem toward the outside.

Hardwood is the wood of gymnosperms.

Which of the following statements about monocots is true?

Dendrochronology can be useful in determining:

Water is capable of rising to the tops of the tallest trees due to the:

Concentric rings found in the cross section of the wood of trees are known as:

Explain how dissolved sugar is transported in the phloem by means of a pressure gradient.