Which of the following are sugar-transporting cells in angiosperms?
C) sieve-tube elements
Which of the following are relatively unspecialized cells that retain the ability to divide and perform most of the plantʹs metabolic functions of synthesis and storage?
C) parenchyma cells
Which of the following have unevenly thickened primary walls that support young, growing parts of the plant?
D) collenchyma cells
Which of the following have thick, lignified walls that help support mature, nongrowing parts of the plant?
D) clerenchyma cells
The vascular bundle in the shape of a single central cylinder in a root is called the
One important difference between the anatomy of roots and the anatomy of leaves is that
D) a waxy cuticle covers leaves but is absent in roots.
Which of the following are true statements about the cells shown in the photograph in Figure 35.1 above?
E) Both A and B.
A student examining leaf cross sections under a microscope finds many loosely packed cells with relatively thin cell walls. The cells have numerous chloroplasts. What type of cells are these?
Plants contain meristems whose only function is to
The best word to describe the growth of plants in general is
Which of the following arise from lateral meristem activity?
A) secondary xylem
A vessel element would likely lose its protoplast in which section of a root?
C) zone of maturation
A plant has the following characteristics: a taproot system; several growth rings evident in
a cross section of the stem, and a layer of bark around the outside. Which of the following
best describes the plant?
A) herbaceous eudicot
B) woody eudicot
C) woody monocot
D) herbaceous monocot
E) woody annual
B) woody eudicot
The driving force that pushes the root tip through the soil is due primarily to
E) elongation of cells behind the root apical meristem.
Shoot elongation in a growing bud is due primarily to
C) cell elongation localized in each internode
A) develop from meristematic cells left by the apical meristem.
Gas exchange, necessary for photosynthesis, can occur most easily in which leaf tissue?
E) spongy mesophyll
I. root cap
II. zone of elongation
III. zone of cell division
IV. zone of cell maturation
V. apical meristem
38) Which of the following is the correct sequence from the growing tips of the root upward?
A) I, V, III, II, IV
Which of the following is incorrectly paired with its structure and function?
E) pericycle-waterproof ring of cells surrounding the central stele in roots
Which of the following illustrates the idea that the fate of a cell is a direct result of its position?