The Importance of Leaves
Practice Test
1.
In what leaf arrangement do leaves grow individually at single points along the stem?
a.
alternate
b.
whorled
c.
spiral
d.
opposite
Hint
2.
Which of these is the outer layer of cells of a leaf?
a.
palisade layer
b.
spongy layer
c.
epidermis
d.
waxy layer
Hint
3.
What is the thin flat part of a leaf?
a.
midrib
b.
blade
c.
small veins
d.
stalk
Hint
4.
What is the pigment in plants that traps solar energy for use in photosynthesis?
a.
sucrose
b.
chlorophyll
c.
chloroplast
d.
glucose
Hint
5.
What happens when a plant loses water faster than it can be replaced?
a.
growing
b.
wilting
c.
digesting
d.
drowning
Hint
6.
In what leaf arrangement do leaves grow across from each other on the stem?
a.
opposite
b.
alternate
c.
spiral
d.
oval
Hint
7.
In what leaf arrangement do three or more leaves grow from single points along the stem?
a.
spiral
b.
opposite
c.
whorled
d.
alternate
Hint
8.
What general charactersitic of the leaf can be used to identify the type of leaf?
a.
number of small veins
b.
length of the midrib
c.
shape of the leaf edge
d.
thickness of the stalk
Hint
9.
What is the process used by animals and plants to break down sugars?
a.
photosynthesis
b.
transpiration
c.
respiration
d.
recreation
Hint
10.
What are green cells that change the size of the stomata?
a.
epidermal cells
b.
guard cells
c.
stomas
d.
stinging cells
Hint
