Chapter 23:
Plant Structure and Function
Practice Test
1.
The purpose of phloem in plants is to _________.
a.
produce a tough covering for plant stems
b.
enable the plant to grow
c.
transport sugar and organic compounds
d.
transport water and minerals
Hint
2.
The response of a plant to light stimulus is called __________.
a.
phototropism
b.
respiration
c.
photosynthesis
d.
geotropism
Hint
3.
Plant hormones, such as __________, affect plant growth by promoting cell elongation.
a.
tropisms
b.
calcitonin
c.
auxins
d.
aldosterone
Hint
4.
The xylem of angiosperms is made up of fibers and __________.
a.
pith
b.
vessel elements
c.
companion cells
d.
cambium
Hint
5.
Biennial plants include those that __________.
a.
live for several years and periodically produce flowers and seeds
b.
live two years and develop large storage roots
c.
are herbaceous and live for only a year
d.
have a dominant gametophyte generation
Hint
6.
The evaporation of water from leaves is called __________.
a.
turgor pressure
b.
transpiration
c.
wilting
d.
osmosis
Hint
7.
Tiny extensions of single epidermal cells are called _________.
a.
endodermis
b.
root hairs
c.
cortex
d.
xylem
Hint
8.
Most leaves have a large surface area so they can receive large amounts of ___________.
a.
rain
b.
sunlight
c.
carbon dioxide
d.
oxygen
Hint
9.
Which of the following plant cells are thin-walled, can carry on photosynthesis and can be used to store food?
a.
sclerenchyma
b.
xylem
c.
parenchyma
d.
collenchyma
Hint
10.
The vascular bundles of monocot stems are __________.
a.
arranged in a star-shaped mass at the center of the root
b.
scattered throughout the stem
c.
arranged in vascular bundles in the cortex
d.
formed in a continuous cylinder between the cortex and the pith
Hint
11.
The photosynthetic tissue of the leaf is called __________.
a.
epidermis
b.
cuticle
c.
mesophyll
d.
cortex
Hint
12.
Growth at the tip of stems and roots is due to cell division in the _________.
a.
mesophyll layer
b.
apical meristem
c.
vascular tissue
d.
vascular cambium
Hint
13.
The long, tough strands found in celery are made up of what plant cells?
a.
parenchyma
b.
collenchyma
c.
cuticle
d.
schlerenchyma
Hint
14.
The dermal tissue of a plant provides ____ for the plant.
a.
water
b.
protection
c.
oxygen
d.
support
Hint
15.
When water enters guard cells, the stomata _________.
a.
do not change
b.
close
c.
cannot carry on gas exchange
d.
open
Hint
