5. a) The response exhibited by a pollen tube growing towards the embryo sac is chemotropism. b) The response exhibited by maggots moving from the lit side of a box to the dark side is phototaxis. 6. a) An example of rheotaxis is fish swimming upstream against a river current. b) An example of aerotaxis is bacteria moving towards or away from areas with specific oxygen concentrations. 8. a) After 30 minutes, the termites will have moved from the lit, dry area to the dark area with moist soil. Termites prefer dark and moist environments. 3 done, 2 left today. You're making progress.