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Plant Processes
Test Description: Ch 13 Test
Instructions: Answer all questions to get your test result.
1) A plant that bends toward the light is showing
A
a positive tropism
B
a negative tropism
C
that it knows where light is coming from
D
seasonal change
2) Root tops of most plants grow toward the center of the Earth. This action is a
A
positive gravitropism
B
negative gravitropism
C
negative phototropism
D
positive phototropism
3) Leaves turn orange and yellow in fall because
A
orange and yellow are easier to see in the cool weather
B
they have more orange and yellow pigment in the fall
C
longer days cause the color change
D
their green chlorophyll breaks down
4) The energy that starts the process of photosynthesis comes from
A
chlorophyll that is taken from the soil
B
the breakdown of sugar in the plants
C
grana
D
sunlight
5) A plant seed develops from
A
an anther
B
pollen
C
an ovary
D
an ovule
6) Stomata are important because they
A
begin photosynthesis
B
play a role in gas exchange
C
feed the plant
D
break down chlorphyll
7) Deciduous trees shed their leaves
A
to survive long periods without rain
B
during the wet season
C
at different times during the year
D
when the weather is warm
8) Plants that bloom whne nights are long are called
A
short-day plants
B
long-day plants
C
deciduous plants
D
evergreen plants
9) Which of the following lists the three ways in which plants reproduce asexually?
A
platelets, tubers, and runners
B
seeds, sprouts, and leaves
C
chlorophyll, photosynthesis, and transpiration
D
germination, pollination, and fertilization
10) The seeds of some plants are protected by
A
flowers
B
fruits
C
leaves
D
stems
*select an answer for all questions
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