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