Across
- 2. Growth with or against gravity.
- 4. A protective sheath that covers the first leave of a cereal seedling. Commonly used in tropism experiments.
- 5. A chemical messenger.
- 7. The directed growth towards or away from a stimulus.
- 8. Roots grow towards water, this means they are _________ hydrotropic.
- 9. The plant growth substances which travel around the plant and mediate growth processes.
Down
- 1. The stimulus responsible for hydrotropism.
- 3. A process which depends upon the plants getting enough water and sunlight.
- 6. Famous Biologist who carried out many tropism experiments.