AAPR Orientation in space - animals

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Across
  1. 1. Orientation using the Sun's position, usually with time compensation from an internal clock.
  2. 3. Finding and maintaining a route towards a goal by using compass information, position information, or both.
  3. 5. A receptor that detects temperature or temperature change.
  4. 8. A receptor that detects chemical stimuli.
  5. 9. A non-directional movement response in which speed or turning rate changes with stimulus intensity.
  6. 10. A taxis in which an organism samples a stimulus successively from side to side to orient towards or away from its source.
  7. 12. A kinesis in which movement speed changes with stimulus intensity.
  8. 14. An innate directional movement response towards a favourable stimulus or away from an unfavourable one.
  9. 17. Directional movement towards or away from gravity.
  10. 18. A feature of Earth that can provide directional and positional information to animals able to detect it.
  11. 20. Orientation using the apparent positions or movement of stars.
Down
  1. 2. The ability to detect Earth's magnetic field and use it for orientation or navigation.
  2. 4. Directional movement towards or away from light.
  3. 6. A receptor that detects light.
  4. 7. Returning to a particular home site after travelling away from it, using one or more orientation or navigation cues.
  5. 8. Determining direction using a cue such as the Sun, stars or Earth's magnetic field; a compass gives direction but not position.
  6. 11. Directional movement towards or away from a chemical stimulus.
  7. 13. Regular, often seasonal, mass movement from one region to another and usually back again.
  8. 15. Light waves aligned mainly in one plane; sky polarisation patterns can help animals infer the Sun's position, including when it is obscured.
  9. 16. A kinesis in which the rate of turning changes with stimulus intensity.
  10. 19. Navigation using learned visual features of the landscape to determine position or find a route.