Exam 6: Stems

As woody stems age, lenticels develop directly beneath

Which is a product of a woody stem?

In a mature, woody dicot stem, the tissue between the xylem and the phloem is the __________.

Increase in girth of a tree is due to the activity of

An annual ring

Specialized stems may function as _____________.

Retardation of water loss by cork cells is provided by

Monocot stems have discrete regions of xylem and phloem arranged ___________________; herbaceous dicot stems have discrete regions of xylem and phloem arranged ______________.

Lignin, which is found in the walls of xylem cells, makes the cells tough and hard.

Quartersawed boards are those that have been cut along rays, or parallel to the rays.

In a youngest portion of a woody stem, the epidermis is produced by the ____________________; in the older woody portion of the stem, the epidermis is replaced by cork produced by the __________________.

An increment borer is

The _______________ is a primary meristem that produces parenchyma cells of the cortex.

Paired appendages associated with leaf petioles are ___________________.

Most leaves are attached to the stem by the __________.

An increment borer is a common pest of woody stems.

When three or more leaves occur at a node, the leaf arrangement is said to be

Specialized stems that aid grape vines and Boston ivy in climbing are called stipules.

Which of the following have no nodes or internodes?

Roots produced on rhizomes are adventitious.