1. Structure and Function of Plants
Chapter 10C
Plant Responses

2. The growth responses of a plant to its environment
Tropisms
The growth responses of a plant to its environment

3. Tropisms Positive tropism Negative tropism Phototropism Thigmotropism
Gravitropism

4. Nastic Movements Reversible, repeatable plant movements
Some triggered by touch
Some triggered by light
Other factors

5. A plant’s response to the length of time it is exposed to light
Photoperiodism
A plant’s response to the length of time it is exposed to light

6. Photoperiodism Phytochromes Short-day plants Long-day plants
Day-neutral plants