Plant and animal responses

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Across
  1. 3. chemical released by an animal that influences the behaviour of others of the same species
  2. 6. term for a non-directional plant response, such as touch-sensitive leaf folding
  3. 7. directional movement of an animal towards or away from a stimulus
  4. 10. relationship in which one species benefits and the other is harmed
  5. 11. use of sensory cues to find direction and location
  6. 13. learned response in which an animal stops reacting to a repeated harmless stimulus
  7. 15. interaction in which one animal kills and eats another
  8. 18. maintenance of a stable internal environment
  9. 19. growth response of a plant towards water
  10. 21. behaviour involving conflict, such as fighting or threat displays, between individuals
  11. 22. plant hormone made in the shoot tip that promotes cell elongation
Down
  1. 1. plant hormone that promotes stem elongation
  2. 2. growth response of a plant towards or away from light
  3. 4. relationship between two species in which both benefit
  4. 5. plant hormone that promotes cell division
  5. 8. seasonal movement of animals between two habitats
  6. 9. response of an organism to the relative length of day and night
  7. 12. growth response of a plant to gravity
  8. 14. area an animal defends against others of the same species
  9. 16. rapid learning that occurs during a critical period soon after birth or hatching
  10. 17. directional growth response of a plant to an external stimulus
  11. 20. term for a rhythm that repeats roughly every 24 hours