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Tropism
Test Description: How plant respond to stimuli.
Instructions: Answer all questions to get your test result.
1) When a plant grows in response to a stimulus, it is referred to as _______________.
A
photosynthesis
B
tropism
C
respiration
D
turgor pressure
2) If a plant grows toward a light source, then it is said to be displaying ____________?
A
Positive hydrotropisn
B
Negative geotropism
C
Positive phototropism
D
Negative phototropism
3) What would happen if a light source was placed below a plant?
A
The plant would exhibit negative phototropism
B
The plant would respond postively to gravity
C
The plant would respond negatively to gravity
D
The plant will grow in an upward position
4) An example of _________________ is when a plant starts to coil around another type of plant.
A
positive gravitropism
B
positive thigmotropism
C
positive hydrotropism
D
negative phototropism
5) What part of the plant responds positively to gravity?
A
stem
B
xylem
C
leaves
D
roots
6) Something that causes a positive or negative response in an organism is called ____________.
A
stimulus
B
conversion
C
photosynthesis
D
reaction
7) What part of the plant displays positive phototropism?
A
leaves and roots
B
all of the above
C
leaves and stem
D
roots and stem
8) Which of the following does not cause a response in plants?
A
all answer choices cause a reaction in plants
B
radiant energy
C
temperature
D
gravitational pull
9) Geotropism is the same as __________.
A
gravitropism
B
germination
C
gamitropism
D
ghettotropism
10) What force causes roots to grow downward?
A
heat
B
light
C
gravity
D
touch
*select an answer for all questions
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