Module 15 Plant Structure and Growth
Which of the following is a true statement?
Secondary growth is produced by both the vascular cambium and the cork cambium.
Choose the option that best describes the relationship between the cell wall thickness of parenchyma cells versus sclerenchyma cells.
The cell walls of parenchyma cells are thinner than those of sclerenchyma cells.
One important difference between the anatomy of roots and the anatomy of leaves is that
a waxy cuticle covers leaves but is absent from roots.
Vascular plant tissue includes all of the following cell types except
cambium cells.
Shoot elongation in a growing bud is due primarily to
cell elongation localized in each internode.
Which of the following have unevenly thickened primary walls that support young, growing parts of the plant?
collenchyma cells
Which structure is incorrectly paired with its tissue system?
companion cell-ground tissue
The driving force that pushes the root tip through the soil is primarily
elongation of cells behind the root apical meristem.
When you eat Brussels sprouts, what are you eating?
large axillary buds
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 they?
parenchyma
Which of the following root tissues gives rise to lateral roots?
pericycle
Which of the following is incorrectly paired with its structure and function?
pericycle-waterproof ring of cells surrounding the central stele in roots
Which of the following is derived from the ground tissue system?
pith.
Plants contain meristems whose major function is to
produce more cells.
Which part of a plant absorbs most of the water and minerals taken up from the soil?
root hairs
Cells produced by lateral meristems are known as
secondary tissues.
Which of the following cells or tissues arise from lateral meristem activity?
secondary xylem
Which of the following cells transport sugars over long distances?
sieve-tube elements
Gas exchange, which is necessary for photosynthesis, can occur most easily in which leaf tissue?
spongy mesophyll
The vascular bundle in the shape of a single central cylinder in a root is called the
stele.
What effect does "pinching back" have on a houseplant?
stimulates lateral buds to grow
CO2 enters the inner spaces of the leaf through the
stoma
Pores on the leaf surface that function in gas exchange are called
stomata
Additional vascular tissue produced as secondary growth in a root originates from which cells?
vascular cambium