Mrs. Keadle JH Science
Name__________________________________ period _____
date assigned_____________ date due ______________ date returned _____________
Tropism
Power Point Questions
1. A ________________________________ is a change in an organisms surroundings
that causes a response.
-
internal _______________________________________________________
-
external ______________________________________________________
2. A ______________________________ is the reaction of a living thing to a stimulus.
3. A _____________________________ is an automatic movement by an organism
either ______________________ or _____________________ from a stimulus.
-
positive_______________________________
-
negative______________________________
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Tropism Power Point Questions
Mrs. Keadle JH Science
4. Phototropism – when an organism moves toward or away from _______________.
- positive ________________________________
- negative ________________________________
5. Draw a plant showing signs of phototropism.
6. A plants response to gravity is called ___________________________________.
- positive ____________________________
- negative ___________________________
7. What is another term for geotropism?_____________________________________
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Tropism Power Point Questions
Mrs. Keadle JH Science
8. Draw an example of geotropism.
9 . __________________________ is directional movement toward water.
the ___________________ of plants reach out toward water
10. Draw a diagram of hydrotropism.
11. When a organism responds to touch, it is called ____________________________
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Tropism Power Point Questions
Mrs. Keadle JH Science
12. Draw a diagram showing thigmotropism.
13. ____________________________ forces allow seedlings to push their way
through the soil and sometimes rock.
14. ____________________ pressure is a force in the form of pressure.
- plants _________________________________________________________
- animals __________________ __________ ____________________________
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Tropism Power Point Questions
Mrs. Keadle JH Science
PLANT RESPONSES
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Tropism Power Point Questions
Mrs. Keadle JH Science
Instructions
Diagram what a plant would look like in the following situations. Describe the stimulus and response.
Phototropism
Geotropism
Hydrotropism
Plant
Plant
Plant
Light
Down
Water
Stimulus______________________
_____________________________
Stimulus _______________________
______________________________
Stimulus______________________
_____________________________
Response____________________
____________________________
____________________________
Response______________________
______________________________
______________________________
Response_____________________
_____________________________
_____________________________
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Tropism Power Point Questions