Unit 10: Plant Stimulus and
Response
Unit 10: Plant Stimuli and Responses
SCI.7.7C Demonstrate and
illustrate forces that affect
motion in everyday life,
such as emergence of
seedlings, turgor pressure,
and geotropism.
SCI.7.13A Investigate how
organisms respond to
external stimuli found in the
environment such as
phototropism.
Vocabulary
1. Stimulus
2. Homeostasis
3. Geotropism
4. Hydrotropism
5. Tropism
6. Xylem
7. Thigmotropism
8. Phloem
9. Phototropism
10. Capillary
11. response
Stimulus and Response
(Stimuli and Responses)
Stimulus
Cell phone rings
Stomach growls
Someone calls your name
in the hallway
Dismissal bell rings
Internal or External?
Response
Tropisms
Type of Tropism
1. geotropism/gravitropism
2.
3.
4.
What is the
stimulus
What is the
plant response?
Is the response
positive or negative?
Explain.