Across
- 1. The hormone that regulates water content in the kidneys
- 6. Muscles or cells which respond to stimuli
- 8. Light shining from one direction only
- 10. First shoot to appear from a germinating seed
- 11. A change in an animal or plant surroundings
- 12. To make or grow longer
- 14. Apparatus to eliminate effect of gravity on plant growth
- 15. Plant hormone which controls growth at tips of shoots and roots
- 16. The C in Mrs C Gren
- 17. Sight receptor organ
Down
- 2. Keeping the conditions of the internal environment relatively constant
- 3. plant response to direction of gravity
- 4. plant response towards direction of light
- 5. A reaction to a change in animal or plant surroundings
- 7. growth response of a plant to a directional stimulus
- 9. First root to appear from a germinating seed
- 13. A response away from stimulus