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Ch. 24 Test A

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

 1. 
In gymnosperms, ovules are located near the base of each
a.
scale.
c.
carpel.
b.
filament.
d.
cone.
 

 2. 
The sterile leaves of a flower are the
a.
carpel and stamens.
c.
stigma and style.
b.
filaments and anthers.
d.
sepals and petals.
 

 3. 
A pollen grain landing near an ovule produces a
a.
gametophyte.
c.
flower.
b.
pollen tube.
d.
stamen.
 

 4. 
In angiosperms, the nucleus of each pollen grain undergoes
a.
one meiotic division.
c.
one mitotic division.
b.
two meiotic divisions.
d.
two mitotic divisions.
 

 5. 
The endosperm of a corn seed develops through the process of
a.
pollination.
c.
double fertilization.
b.
fertilization.
d.
germination.
 

 6. 
Which of the following is NOT true of all fruits?
a.
All fruits contain seeds.
b.
All fruits are sweet.
c.
All fruits help disperse seeds.
d.
All fruits are formed from the ovary wall.
 

 7. 
A seed that is dispersed to an area far away from the parent plant might face less
a.
alternation.
c.
germination.
b.
pollination.
d.
competition.
 

 8. 
Seeds dispersed by animals typically are contained in
a.
fleshy, nutritious fruits.
c.
buoyant structures.
b.
cones.
d.
lightweight structures.
 

 9. 
A period during which the embryo of a seed is alive but not growing is
a.
fruit production.
c.
germination.
b.
seed production.
d.
dormancy.
 

 10. 
What is true of the seed coat during germination?
a.
It must crack open.
b.
It cannot be damaged if germination is to occur.
c.
It dissolves in water.
d.
It is absorbed by the growing plant.
 

 11. 
When a plant reproduces vegetatively, its offspring
a.
are genetically different.
b.
are genetically identical.
c.
remain dormant until the spring.
d.
grow from seeds.
 

 12. 
The horizontal stems of the strawberry plant shown in Figure 24-2 are called

mc012-1.jpg

Figure 24–2
a.
scions.
c.
buds.
b.
stolons.
d.
plantlets.
 

 13. 
What would be the best method of propagating most woody plants?
a.
using cuttings
c.
planting seeds
b.
grafting or budding
d.
hand pollination
 

 14. 
Which two methods of plant propagation are most similar?
a.
planting seeds and rooting cuttings
b.
rooting cuttings and grafting
c.
rooting cuttings and budding
d.
grafting and budding
 

 15. 
Corn, sugar beets, cauliflower, and cabbage were all developed by
a.
plant propagation.
c.
pollination.
b.
germination.
d.
selective breeding.
 

Completion
Complete each statement using the folowing terms:

outer seed coat         seed         pollen cones         style         risen
 

 16. 
In gymnosperms, _________________________ produce the male gametophytes.
 

 

 17. 
In the gymnosperm seed, the _________________________ is part of the old sporophyte generation.
 

 

 18. 
In the flower diagram in Figure 24-2, the structure labeled C is called the ____________________.
 

 

 19. 
A coconut is a very large ____________________ that contains a milky endosperm layer.
 

 

 20. 
Figure 24-3 shows that, from 1970 to 2000, the annual yield of corn in the United States fluctuated up and down. The overall trend however, is that corn yield has ____________________.

co020-1.jpg

Figure 24–3
 

 



 
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