| Across |
| 2. |
Specialized plastids in plant cells that store starch. |
| 4. |
Light-sensitive proteins in plants that detect light and trigger phototropic responses. |
| 5. |
Movements of plants in response to touch or physical stimuli. |
| 7. |
Harmful substances that can damage or kill living organisms. |
| 9. |
The shedding of plant parts, such as leaves, flowers, or fruits. |
| 10. |
The process by which plants respond to light and change their growth and development. |
| 14. |
The sense of physical contact. |
| 15. |
The course along which something moves or faces. |
| 16. |
The growth or movement of a plant in response to gravity. |
| 17. |
The force applied to a material that can cause deformation or damage. |