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Ch. 23 Test A

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
Ground tissue is found in plant
a.
stems only.
c.
roots and stems only.
b.
stems and leaves only.
d.
roots, stems, and leaves.
 

 2. 
Which of the following should a student examine under a compound microscope to observe cell division?
a.
epidermis of a leaf
c.
xylem from a tree trunk
b.
tip of a shoot
d.
phloem from the leaf of a plant
 

 3. 
If some of the xylem of a young oak tree was destroyed, it would most likely interfere with the tree’s ability to
a.
conduct sugars to the roots.
c.
absorb carbon dioxide from the air.
b.
absorb sunlight.
d.
conduct water to the leaves.
 

 4. 
Which of the following are found mainly in monocots?
a.
taproots
c.
extensive root systems
b.
long, thick primary roots
d.
small secondary roots
 

 5. 
The vascular cylinder of a root consists of
a.
xylem only.
b.
phloem only.
c.
xylem and phloem.
d.
xylem, phloem, and ground tissue.
 

 6. 
There is a one-way movement of water and minerals from the cortex into the vascular cylinder of a root because
a.
water molecules are in high concentration in the cortex.
b.
nutrients are in low concentration in the cortex.
c.
the root pressure is low.
d.
the Casparian strip is waterproof.
 

 7. 
Root pressure
a.
causes a plant’s roots to absorb water.
b.
forces the water in xylem downward.
c.
is produced in the cortex of the root.
d.
is produced in the vascular cylinder by active transport.
 

 8. 
The vascular tissue in a plant’s stem
a.
has buds.
b.
is continuous from the roots.
c.
carries nutrients up the stem but not down.
d.
consists of nodes.
 

 9. 
Vascular bundles are
a.
surrounded by pith in monocot stems.
b.
found only in dicot roots.
c.
scattered throughout dicot stems.
d.
surrounded by parenchyma in both monocot and dicot stems.
 

 10. 
In dicot plants, secondary growth
a.
changes primary xylem and phloem to secondary xylem and phloem.
b.
makes the roots longer.
c.
results from an increase in the primary xylem and phloem.
d.
produces wood.
 

 11. 
Most of the photosynthetic activity in plants takes place in the
a.
mesophyll.
c.
guard cells.
b.
stomata.
d.
xylem.
 

 12. 
The stomata of leaves are usually open in
a.
light if a plant has enough water.
b.
light if a plant has too little water.
c.
darkness if a plant has enough water.
d.
darkness if a plant has too little water.
 

 13. 
Which of the following terms is LEAST related to the other terms?
a.
oxygen
c.
carbon dioxide
b.
stomata
d.
companion cells
 

 14. 
Water will move higher in a narrow glass tube than in a wide glass tube because of
a.
adhesion only.
c.
pressure.
b.
capillary action.
d.
cohesion only.
 

 15. 
When a plant moves sugars from its leaves to its stems, the sink is the
a.
leaves.
c.
stems.
b.
roots.
d.
same as the source.
 

Completion
Complete each statement using the following terms:

transpiration pull       ground elements       osmosis       spongy mesophyll       sieve tube
 

 16. 
When sugars move through phloem cells called ____________________, they pass through small holes between the cells.
 

 

 17. 
Root hairs take in water from the soil through the process of ____________________.
 

 

 18. 
In Figure 23-1, A is pointing to _________________________ tissue.

co018-1.jpg

Figure 23-1
 

 

 19. 
Stomata open into the _________________________ layer of a leaf.
 

 

 20. 
Water rises to the top of a giant redwood tree by ____________________.
 

 



 
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