Name: 
 

Plant Process Review


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

 1. 
The cells that open and close the stomata are the
a.
guard cells.
c.
cuticle cells.
b.
xylem cells.
d.
mesophyll cells.
 

 2. 
Plant cells need carbon dioxide, which is used for
a.
cellular respiration.
c.
fertilization.
b.
phototropism.
d.
photosynthesis.
 

 3. 
When chlorophyll breaks down,
a.
pollination occurs.
c.
red pigments disappear.
b.
other pigments become visible.
d.
photosynthesis occurs.
 

 4. 
Which of the following sequences shows the correct order of events that occur after an insect brings pollen to a flower?
a.
germination, fertilization, pollination
c.
pollination, germination, fertilization
b.
fertilization, germination, pollination
d.
pollination, fertilization, germination
 

 5. 
When the amount of water transpired from a plant's leaves is greater than the amount absorbed by its roots,
a.
the cuticle conserves water.
b.
the stem exhibits positive gravitropism.
c.
the plant wilts.
d.
the plant recovers from wilting.
 

 6. 
Ovules develop into
a.
fruits.
c.
flowers.
b.
ovaries.
d.
seeds.
 

 7. 
A houseplant that is bending toward a sunlit window is
a.
displaying a positive tropism.
c.
undergoing genetic change.
b.
displaying a negative tropism.
d.
showing a seasonal effect.
 

 8. 
The root tips of most plants show
a.
negative phototropism.
c.
positive phototropism.
b.
positive gravitropism.
d.
negative gravitropism.
 

 9. 
Plant cells make glucose molecules from
a.
CO2 and O2.
c.
H2O and H2.
b.
C6H12O6.
d.
CO2 and H2O.
 

 10. 
Leaves become red and orange in autumn because
a.
they absorb red pigment.
c.
they absorb orange pigment.
b.
their green chlorophyll breaks down.
d.
they receive more sunlight.
 

 11. 
The energy that powers photosynthesis comes from
a.
light given off by the sun.
b.
collisions of gas molecules in the air.
c.
the breakdown of sugar molecules inside plant cells.
d.
chlorophyll absorbed through the soil.
 

 12. 
A plant seed develops from
a.
an ovary.
c.
a sepal.
b.
an ovule.
d.
a pollen tube.
 

 13. 
The sperm cells of a flowering plant are contained in
a.
the ovary.
c.
the stigma.
b.
ovules.
d.
pollen grains.
 

 14. 
Pollination occurs when pollen grains are transported from ____ to ____.
a.
anthers; stigmas
c.
sepals; styles
b.
stigmas; anthers
d.
styles; sepals
 

 15. 
Pollination begins the process of
a.
mitosis.
c.
fertilization.
b.
meiosis.
d.
photosynthesis.
 

 16. 
After pollination, a tube grows from the pollen grain through the ____ to the ovary.
a.
style
c.
sepal
b.
stigma
d.
stamen
 

 17. 
An ovule contains
a.
pollen grains.
c.
a single egg.
b.
several eggs.
d.
sperm cells.
 

 18. 
After fertilization occurs, the ovary develops into
a.
a new flower.
c.
a seed.
b.
a fruit.
d.
pollen.
 

 19. 
After fertilization occurs, the ____ fall away.
a.
petals and stamens
c.
stigmas and sepals
b.
petals and sepals
d.
styles and sepals
 

 20. 
How many fruits and seeds could develop from a flower with one ovary containing six ovules?
a.
six fruit and six seeds
c.
one fruit and six seeds
b.
one fruit and one seed
d.
six fruit and one seed
 

 21. 
Each seed contains
a.
pollen.
c.
eggs.
b.
spores.
d.
a tiny plant.
 

 22. 
When seeds are dormant, they are
a.
dead.
c.
lazy.
b.
inactive.
d.
deformed.
 

 23. 
For most plants, the ideal temperature for growth is about
a.
0°C
c.
27°C
b.
10°C
d.
100°C
 

 24. 
Asexual reproduction in plants does NOT involve the formation of
a.
flowers.
c.
fruits.
b.
seeds.
d.
All of the above
 

 25. 
The kalanchoe plant reproduces by means of ____ along the margins of its leaves.
a.
buds
c.
eggs
b.
veins
d.
plantlets
 

 26. 
The "eyes" of potatoes are
a.
roots.
c.
buds that can grow into new plants.
b.
ovules.
d.
pollen grains.
 

 27. 
Buds along each ____ of a strawberry plant grow into new plants.
a.
runner
c.
leaf
b.
root
d.
ovary
 

 28. 
Chloroplasts contain ____, a green pigment that absorbs light energy.
a.
photosynthesis
c.
chlorophyll
b.
a cuticle
d.
an ovule
 

 29. 
To produce food, a plant needs
a.
oxygen.
c.
sugar.
b.
sunlight.
d.
All of the above
 

 30. 
Chlorophyll absorbs
a.
water.
c.
light energy.
b.
carbon dioxide.
d.
oxygen.
 

 31. 
Sunlight is actually
a.
clear light.
b.
yellow light.
c.
orange light.
d.
a mixture of all the colors of the rainbow.
 

 32. 
Plants look green to us because chlorophyll absorbs
a.
only green.
b.
all of the colors in light except green.
c.
red and blue, which when mixed together make green.
d.
blue and yellow, which when mixed together make green.
 

 33. 
A by-product of photosynthesis is
a.
oxygen.
c.
carbon monoxide.
b.
carbon dioxide.
d.
water.
 

 34. 
The sugar made and used by plants is made in the
a.
roots.
c.
leaves.
b.
stem.
d.
flowers.
 

 35. 
Oxygen, one of the byproducts of photosynthesis, is used by plants during
a.
fertilization.
c.
transpiration.
b.
cellular respiration.
d.
photosynthesis.
 

 36. 
In terms of the molecules used and produced during photosynthesis and cellular respiration, these processes are essentially ____ each other.
a.
the same as
c.
no relation to
b.
two versions of
d.
the reverse of
 

 37.