1. T 6. T 11. C 16. A
2. F 7. F 12. C 17. A
3. T 8. T 13. B 18. C
4. T 9. F 14. D 19. A
5. T 10. T 15. B 20. D
21. At 20 degrees, the larvae would accumulate 14 degree-days
each day (20-6=14). Over four days @ 20 degrees they would
accumulate 56 degree days (14x4=56). Therefore, the larvae
must have accumulated 420-56=364 DD before they were
collected from the body.
22. D 27. A
23. C 28. D
24. B 29. A
25. B 30. C
26. A 31. E
32. Torpor and quiescence are directly induced by unfavorable
environmental conditions (e.g. cold temps). Diapause is
genetically programmed and occurs prior to the onset of
unfavorable conditions.
33. An ocellus has a single corneal lens (dioptric apparatus)
with several receptors (rhabdoms) beneath it. A compound
eye has a separate dioptric apparatus for each of many
rhabdoms.
34. All worker bees are adult females rendered sexually sterile
by the effects of queen pheromone. Worker termites are
immatures (both male and female) and potentially could
molt into soldiers or reproductives.
35. Batesian mimics are palatable, but they resemble another
species that is unpalatable. Mullerian mimics are all
unpalatable; they resemble each other so all benefit
when a predator learns to avoid them.
36. Taxis is "directed" movement toward or away from a
stimulus. It requires input from a pair of sensory
receptors. Kinesis is "undirected" -- a change in
rate of locomotion or frequency of turning in response
to a stimulus. Only one receptor is needed.
37. Line #1 (Subesophageal) cross out Heart, Crop, & Salivary glands
Line #2 (Protocerebrum) cross out Antennae & Labrum
Line #3 (Frontal) cross out Mandibles, Maxillae, & Palps
Line #4 (Metathoracic) cross out Midgut, Proventric, & Cerci
Line #5 (Caudal) cross out Wings, Legs, & Rectum
38. Essay: A thorough answer would include a discussion of
at least five of the following points --
a. spectral sensitivity -- esp. red and UV
b. true color vision -- bichromatic vs. trichromatic
c. mosaic image vs. true image
d. flicker fusion frequency -- motion detection
e. substrate vibrations (chordotonal organs)
f. sensitivity to high frequency sound vibrations
g. sensitivity to chemical substances -- esp. pheromones
