Entomology 105 Name___________________

Caution!!! Past exams may NOT reflect lectures covered in current year's exam and may cover different material

Second hour exam

April 3, 2002

1. (2 points) Name two orders of insects in which carnivory is always present:



2. Which is the proper common name of the carnivorous insects in the order Dictyoptera:

praying mantis or preying mantis?


3. One insect family which contains primarily species that attack sedentary prey as aphids is the ___________.

4.(2 points) Name two orders in which parasitoids can be found:



5. (2 points) What two things can parasitoids inject into their hosts in order to alter development?



6.Which of the following statements is true?

a. Insects are a good source of dietary protein for humans

b. Insects are low in cholesterol and salt

7. Australopithecus robustus used bone tools to dig into termite mounds

a. 500,000 years ago

b. 1 million years ago

c. 5 million years ago

d. 50,000 years ago

7. (2 points) What is a witchety grub and where is it eaten?


8. (2 points) What is a food defect action level and who sets these levels?



9. If you have allergies to shellfish or dust, why shouldn’t you eat insects?



10. Define "thanatosis."


11. (2 points) Which insect has an osmeterial gland and what chemical might you find inside it?


12. Provide one example of an insect that defends itself by reflex bleeding:


13. The orange and black pattern of a monarch butterfly advertises its distastefulness; what is this type of color pattern called?

a. homotypic

b. cryptic

c. psychedelic

d. aposematic

14. A mimicry system in which the model is toxic and the mimic is palatable is called a _________ mimicry system.

15. The order to which the Spanishfly belongs is ______________.

16. If you believed in the doctrine of signatures, what insect might you prescribe for baldness?



17. (2 points) Describe two ways insects can be used to treat diseases or injuries without swallowing them:



18. Bee venom has been used in the treatment of ____________.

19. The active component of extracts of Spanishfly is a chemical called

a. luciferin

b. cantharidin

c. allantoin

d. diamphidiatoxin

20. What is the "central dogma" of biology?



21. In 1909, the white eye mutant of Drosophila melanogaster was described by

a. Thomas Malthus

b. Charles Darwin

c. Thomas Hunt Morgan

d. Charles Valentine Riley



22. What does "PCR" stand for?


23. (2 points) a. When was sequencing of the Drosophila melanogaster genome completed?

b. Approximately how many genes is the Drosophila melanogaster genome thought to contain?



24. Name an insect other than a fruit fly that has been genetically transformed.


25. (2 points) Name two orders in which all immature stages are aquatic:



26. The gas present in highest concentration in a physical gill is

a. oxygen

b. nitrogen

c. carbon dioxide

d. argon

27. Waterscorpions and rat-tailed maggots breathe underwater by way of a

a. siphon

b. tracheal gill

c. plastron

d. physical gill

28. What function other than respiration do the rectal gills of dragonfly nymphs serve?


29. True or false: Unlike vertebrates, insects never use hemoglobin in respiration.

30.(2 points) What are hydrofuge hairs and where might you find them?


31. Name an order of insects that are ectoparasitic as adults and freeliving as larvae:


32. (2 points) Describe two morphological features shared by many ectoparasitic insects:



33. (2 points) Provide an example of an arthropod involved in

dermatosis -

myiasis -

34. Which of the following parasites is likely to have mycetomes?

a. mosquitoes

b. fleas

c. lice

d. deer flies

35. What standard practice began with the Reed commission in Havana?


36. To what family do mosquitoes belong?


37. (2 points) Other than yellow fever, name two other viruses vectored by mosquitoes:



38. Species in the genus ______________ are the principal vectors of yellow fever.

39. Why is yellow fever known by that name?


40. (2 points) a. Are Plasmodium ookinetes found in mosquitoes or in humans?

b.Are mosquitoes or humans the definitive host for Plasmodium?


41. Species in the genus ____________ are the principle vectors of malaria.

42. The person who demonstrated transmission by mosquitoes of filarial worms was

a. Ronald Ross

b. Patrick Manson

c. Carlos Finlay

d. Charles Laveran

43. What might the rise of agriculture 8,000 to 10,000 years ago have to do with an increase in malaria infections in humans?



44. Plasmodium is a

a. protozoan

b. virus

c. rickettsia

d. bacterium


45. The individual who identified Xenopsylla cheopis as the principal vector of plague was

a. Benjamin Rush

b. Charles Rothschild

c. Alexandre Yersin

d. Masanori Ogata

46. Xenopsylla cheopis belongs to the order _____________.

47. Which of the following mammals is NOT likely to harbor fleas?

a. fox

b. mountain lion

c. moose

d. squirrel

48. Yersinia pestis is a

a. bacterium

b. nematode

c. virus

d. protozoan

49. (2 points) There are three forms of plague; two of these three are



50. Which nation experimented with plague and fleas as biological warfare agents in World War II?

51. Exanthematous typhus is caused by what kind of microorganism?

a. virus

b. bacterium

c. protozoan

d. rickettsia

52. (2 points) Name two diseases other than typhus that are vectored by lice:



53. (2 points) For which two men is the disease-causing agent of typhus named?



54. In what year was the genome of the causative organism of typhus sequenced?

a. 1998

b. 1999

c. 2000

d. 2001

55. True or false: Typhus is always fatal to its louse vector

56. ( 2points) List two orders that contain many coprophagous species:



57. Infestation of the intestinal tract with dung-eating beetles is called ______________.

58. Musca vetustissima is found feeding on dung on what continent?

59. Provide an example of an anatomical or behavioral feature that may have led ancient Egyptians to associate Scarabaeus sacer with the sun.



60. Which of the following diseases has NOT been associated with the house fly as vector?

a. typhus

b. typhoid fever

c. cholera

d. dysentery

61. Larval dermestids can break down ______________, the principal component of hair and feathers.

62. Which species are typically associated with the "fresh" or "bloat" stage of decomposition?

a. blow flies

b. tineid larvae

c. cheese skipper

d. sexton beetles

63. Provide an example of how DNA can be used in forensic entomology:



64. In an insect, sperm are produced in the testes, travel through the seminar vesicles, and are expelled from the body through the

a. aedegus

b. aedeagus

c. aedaegus

d. edeagus

65. True or false: The spermatheca is an organ found in male insects.

66. (2 points) Two orders in which parthenogenetic reproduction is known are:



67. Unlike most insects, silverfish mate by

a. external fertilization

b. indirect sperm transfer

c. direct sperm transfer

68. Which of the following is an example of a post-zygotic reproductive isolating mechanism?

a. sex pheromone specificity

b. nuptial gift

c. hybrid sterility

d. lek formation

69. Which of the following species larviposits?

a. flesh flies

b. cheese skipper

c. clothes moth

d. dermestid beetle

70. (2 points) Most necrophagous species belong in which two orders?



71. The process by which individuals with heritable traits conferring survival produce more offspring than do individuals lacking such traits is called __________ ___________.

72. What is the historical significance of the vedalia beetle, Rodolia cardinalis?



73. (2 points) What is meant by "competitive control"? Provide an example.



74. ( 2 points) List two kinds of biological control agents available to home gardeners:



75. (2 points) If you were stranded on a tropical island and were forced to eat insects, would you choose to eat an aposematic species or a homotypic species? Why?


Extra credit:

1. An example of an order of terrestrial insects important for trout fishing is _____________.

2. Name an order of aquatic insects important for trout fishing: