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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
turgor pressure
C
tropism
D
respiration
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 will grow in an upward position
B
The plant would respond negatively to gravity
C
The plant would exhibit negative phototropism
D
The plant would respond postively to gravity
4) An example of _________________ is when a plant starts to coil around another type of plant.
A
positive hydrotropism
B
positive gravitropism
C
positive thigmotropism
D
negative phototropism
5) What part of the plant responds positively to gravity?
A
stem
B
leaves
C
roots
D
xylem
6) Something that causes a positive or negative response in an organism is called ____________.
A
photosynthesis
B
conversion
C
stimulus
D
reaction
7) What part of the plant displays positive phototropism?
A
all of the above
B
leaves and roots
C
roots and stem
D
leaves and stem
8) Which of the following does not cause a response in plants?
A
all answer choices cause a reaction in plants
B
temperature
C
radiant energy
D
gravitational pull
9) Geotropism is the same as __________.
A
ghettotropism
B
gamitropism
C
germination
D
gravitropism
10) What force causes roots to grow downward?
A
light
B
touch
C
gravity
D
heat
*select an answer for all questions
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