Entomology 105--Insects and People                                                                            Name___________________

First hour exam

February 15, 2002


1. (3 points) Fill in the blanks in the taxonomic hierarchy:

Kingdom, __________, __________, Order, Family, __________, Species


2. (3 points) In the scientific name Agra phobia (a kind of ground beetle),

a. what taxonomic unit is designated by phobia?

b. what taxonomic unit is designated by Agra?

c. Why is the name written in italics?


3. (1 point) Strigiphilus garylarsoni, an owl louse, is named in honor of the cartoonist Gary Larson. The name is thus an example of a(n)

a. synonym

b. patronym

c. eponym

d. homonym


4.  (1 point) What contribution did Carolus Linnaeus make to the classification of organisms?



5. (1 point) The grouping of arthropod segments into functional regions is called __________.


6. (1 point).  If you found an arthropod with a cephalothorax, an abdomen, and four pairs of walking legs, what class do you think it would belong to?

a. Chilopoda

b. Crustacea

c. Arachnida

d. Insecta


7. (3 points) How many antennae

a. do arachnids have?

b. do crustaceans have?

c. do insects have?


8. (1 point) a. The “fish” in the name “silverfish” refers to what anatomical feature?


9. (2 points) Oxygen moves through the body of an insect in a series of tubes called __________ and enters the body through openings called ___________.


10. (3 points) The chemical reaction that confers strength to the cuticle is called ___________ and involves a carbohydrate polymer called ___________ and a protein called ______________.


11. (1 point) What is eclosion?


12. (1 point) What is the arrangement of life stages for hemimetabolous insects?

a. egg, nymph, imago

b. egg, larva, pupa, imago

c. egg, imago, larva, pupa

d. egg, imago, nymph


13. (1 point) What is one biotechnological use of the luciferase gene?


14 (1 point) A single unit of a compound eye is a(n)

a. ocellus

b. sensillum

c. ommatidium

d. rhabdom


15. (1 point) True or false: Bees can see ultraviolet light.


16. (2 points), In order to stridulate,

a. what part of the body do crickets use?

b. what system is used to make the sound?


17.  (1 point) True or false: In fireflies, both males and females can produce light signals for communicating.


18. (1 point) The attraction of moths to candle flames or electric light bulbs is an example of a

a. kinesis

b. primary transverse orientation

c. secondary transverse orientation

d. thigmotaxis


19. (2 points) List two advantages of group living for insects:




20.  (1 point) Which of the following is NOT a defining characteristic of eusociality?

a. reproductive division of labor

b. anal trophallaxis

c. overlap of generations

d. cooperative brood care


21. (1 point) Worker bees assume different tasks in the colony as they age.  This change in behavior with age is called

a. polyethism

b. polyembryony

c. polyploidy

d. polyphony


22. (2 points) Name two orders of insects  in which eusocial species are found:




23. ( 3 points) Honey bee societies are made up of three castes; these are:





24. (2 points) What are two things that bees do to nectar to turn it into honey?




25. (2 points) What are two reasons honey is widely used in the baking industry?




26. (2 points) Bees carry nectar back to the hive in their __________ and they carry pollen back to the hive in their ___________.


27. (1 point)  Name one way honey is used commercially, other than in baking:



28.(1 point) The honey bee dance language is used to communicate information about:

a. when grubs should be fed

b. the presence of intruders in the hive

c. the movement and location of the queen

d. the location of pollen and nectar sources


29. (4 points) Place the following words in the right blanks: stigma, pistil, anther, stamen

In plants, pollen is produced in structures called ___________, located on the __________.  Insect pollinators collect pollen and deliver it to the __________, located on the receptive surface of the __________.


30.  (3 points) Name the insects involved in

a. psychophily

b. myophily

c. buzz pollination


31.  (1 point) The economic value of bee pollination in the U.S. each year is on the order of

a. 1 billion dollars

b. ten billion dollars

c. 50 billion dollars

d. 100 billion dollars



32. (1 point) Which of the following orders is exclusively phytophagous?

a. Hemiptera

b. Hymenoptera

c. Thysanoptera

d. Phasmida


33. (2 points)  Two orders in which fruit feeders are found are:




34. (1 point) About when were crop plants first domesticated?

a. 1,000 years ago

b. 10,000 years ago

c. 20,000 years ago

d. 100,000 years ago


35. (3 points) List three ways that artificial selection has altered the biology of crop plants:





36.  (1 point) Which of the following characteristics is not generally true of plants as food for insects?

a.  they have a high content of indigestible fiber

b. they have a high content of toxic chemicals

c. they  have a high content of sodium

d. they have a low protein content


37. (3 points) Three factors that increase reproductive potential are:





38. (1 point) Define ‘carrying capacity’—



39. (1 point) What kind of pheromones act to promote the appearance of gregarious locusts?


40. (1 point) If you find a migratory locust adult that is sexually immature, yellow in color, and with wings that are long relative to the length of its body, it’s likely to be (pick one)

a. Schistocerca gregaria var solitaria

b. Schistocerca gregaria var gregaria

41. (1 point) What is the biological explanation for the apparent success of insect exorcisms?



42. (1 point). Melanoplus spretus, although now eztinct, was  native to

a.  western North America

b. the Middle East

c. tropical Africa

d.  east Asia.


43. (1 point) What did Herman Hollerith invent and how was his invention related to silk?



44. (2 points) List two properties of silk that make it such a desirable fiber:




45. (1 point)  Fibroin, the inner core of a silk fiber is a(n)

a. amino acid

b. lipid

c. carbohydrate

d. protein


46. (2 points) What is the common name of Bombyx mori?  Explain either the common name or the scientific name of this insect.


47. (1 point ) Name one kind of cell into which silk genes have been cloned for mass production:



48. (2 points) Give an example of a source of commercial silk other than Bombyx mori--

_____________--and provide an example of a product made with this silk ____________.


49. (1 point) What species of homopteran new to California is presenting a threat to California vineyards?


50. (3 points) For each of these useful homopterans, identify the product they provide;

a. Lac scale

b. Cochineal scale

c. Ornate pit scale


51. (1 point) Are leafhoppers, treehoppers, and sharpshooters members of the Auchenorrhyncha or Sternorrhyncha?


52. (2 points) List two contemporary uses for cochineal:




53. (1 point) What is a cecidozoan?



54.  (1 point) Which of the following is NOT a gall-making homopteran?

a. Phylloxera

b. Pemphigus

c. Peripatus

d. Psyllidae


55.  (2 points) Over 70% of North American gall insect species belong to two orders of insects. What are these two orders?   a.



56. (2 points) List two anatomical traits that characterize gallmakers in general:




57. (1 point) When combined with ________ ________, tannic acid from galls forms a precipitate that is blue-black in color.


58. (1 point) What species is the main source of raw material for the manufacture of iron gall ink?

a. Aleppo gall

b. pamakani gall

c. mad apple gall

d. hackberry nipple gall


59. (2 points) Classify the following insects as either primary or secondary pests of stored products:

a. Adzuki bean weevil

b. Mediterranean flour moth


60. (1 point) True or false: The khapra beetle is a major pest of stored grain in the United States.


61. (1 point) Which of the following species DOES NOT possess the ability to break down keratin?

a. Khapra beetle

b. clothes moth

c.. carpet beetle

d. all of these species can break down keratin


62. (2 points) Two physiological or morphological adaptations possessed by a number of stored product pests include:




63. ( 1 point) What is the worst health threat posed by cockroach infestation?

a. they can chew hair and nails of sleeping people and cause injury

b. they can transmit microbes causing dysentery and typhoid fever

c. they produce excrement and body parts that trigger allergic reactions