Name:     ID: 
 
Email: 

Hort 1

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

 1. 

What structure on the underside of the leaf allows the leaf to breathe or transpire?
a.
stem
b.
pistil
c.
stoma
d.
chloroplasts
 

 2. 

Which part of the root absorbs the moisture and minerals?
a.
root canal
b.
root cap
c.
medium roots
d.
root hairs
 

 3. 

If green plants show a ____ color, this indicates a nitrogen deficiency.
a.
white
b.
yellow
c.
dark green
d.
purple
 

 4. 

To aid in moisture retention, ____ matter is added to the soil because it holds many times its own weight in water.
a.
nitrogen
b.
ash
c.
mulch
d.
organic
 

 5. 

What percentage of a plant’s weight does water make up?
a.
90 percent
b.
10 percent
c.
50 percent
d.
25 percent
 

 6. 

If a plant is allowed to reach the extreme wilting stage, ____ occurs.
a.
injury
b.
yellowing
c.
death
d.
aging
 

 7. 

Growth regulating substances in plants are called ____.
a.
particle streams
b.
nitrates
c.
residues
d.
hormones
 

 8. 

What common crop (animal feed) contains a natural growth stimulant?
a.
alfalfa
b.
wheat
c.
marigolds
d.
cactus
 

 9. 

____ are the joints at which buds, leaves, and branches grow out from the stem.
a.
Budettes
b.
Nodes
c.
Intersections
d.
Rootstocks
 

Matching
 
 
Match the description with the correct plant part below.
a.
food manufacture by photosynthesis
b.
sexual propagation of plant
c.
anchors plant; food storage; water and mineral absorption
d.
support for branches; passage of food and water
e.
attracts insects for pollination
f.
seed-carrying structure
 

 10. 

flower
 

 11. 

leaves
 

 12. 

seed
 

 13. 

stem
 

 14. 

roots
 
 
Match the function and description with the correct plant food below.
a.
lack of it can be mistaken for moisture shortage
b.
increases plant cell division needed for fruits and seeds to form
c.
increases aboveground growth, gives dark green color to leaves
d.
furnishes calcium and makes soil more alkaline
 

 15. 

nitrogen
 

 16. 

phosphorus
 

 17. 

lime
 

 18. 

potassium
 
 
Match the actions with the correct hormones below.
a.
stimulate stem and leaf growth, early flowering
b.
stimulate cell division
c.
inhibit seed germination, stem elongation; cause fruit to ripen earlier
d.
accelerate growth by causing cell enlargement
 

 19. 

auxins
 

 20. 

gibberellins
 

 21. 

cytokinins
 

 22. 

inhibitors
 



 
         Start Over