Force & Tropism Key Terms Flashcards
1
Q
Stimulus
A
An action or condition that provokes a response
2
Q
Response
A
A change in a system resulting from a stimulus
3
Q
Turgor pressure
A
the force of water molecules against the cell wall that allows plants to stand up straight.
4
Q
Tropism
A
plant growth toward or away from an external stimulus
5
Q
Geotropism
A
The response of a plant to gravity
6
Q
Positive Geotropism
A
plant growth towards gravity
7
Q
Negative Geotropism
A
plant growth away from gravity
8
Q
Phototropism
A
the growth of a plant toward or away from light
9
Q
Homeostasis
A
an organism’s ability to maintain steady internal conditions when external conditions change
