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