1exam96 Name ______________________

Ent. 105
Insects and People
First hour exam
February 14, 1996

1. In the scientific name Phylloxera vitifoliae
a. what taxonomic unit is designated by Phylloxera?
b. what taxonomic unit is designated by vitifoliae?
c. what is the common name of this insect?

2. a.What's the name of the person who invented the binomial system of nomenclature?

b.What book did he write in 1758?

3. Fill in the blanks in this taxonomic hierarchy:
Kingdom, _____________, ____________, Order, ____________, Genus, _____________.

4. Which one of the following anatomical traits does NOT characterize arthropods?
a. segmented body
b. paired appendages
c. closed circulatory system
d. double ventral nerve cord

5. How many antennae do the following arthropods have?
a. crustaceans
b. insects
c. spiders

6. How many pairs of walking legs do the following arthropods have?
a. scorpions
b. silverfish

7. Match the term for the immature stage with the appropriate order:
a. caterpillar 1. Diptera
b. grub 2. Lepidoptera
c. maggot 3. Coleoptera

8. Do species in the orders Diptera, Lepidoptera, and Coleoptera display holometabolous development or hemimetabolous development?

9. Chitin is
a. a protein found in insect integument
b. a carbohydrate polymer found in insect integument
c. a carbohydrate polymer found in foliage
d. the principal protein in silk

10. Which component of the cuticle is largely responsible for waterproofing?
a. epidermis
b. exocuticle
c. endocuticle
d. epicuticle

11. In holometabolous development, adult tissues are quiescent throughout the immature stages in islands of adult cells called ____________ _____________.

12. What is one disadvantage of possessing an exoskeleton?


13. Specialized cuticular structures equipped with neurons are called _______________.

14. Classify the following behaviors as to type:
a. orientation upwind by a male moth 1. habituation
b. early morning basking in the sun by a dragonfly 2. taxis
c. cockroach nonresponsiveness to lights switched on 3. transverse orientation
d. honey bee "house hunting" 4. latent learning

15. Where would you expect to find an ommatidium?
a. on a tarsal segment
b. on a proboscis
c. in a compound eye
d. in a brain

16. Name an insect that makes sound by
a. contracting muscles to vibrate a membrane
b. scraping a file across a ridge
c. forcing air through a hole to whistle
d. knocking against a substrate

17. Three characteristics defining eusociality are:
a.
b.
c.

18. Eusocial species have never been found in the order
a. Hymenoptera
b. Isoptera
c. Plecoptera
d. Homoptera

19. Worker bees demonstrate polyethism based on
a. time of day
b. size
c. age
d. morphology

20. The honey bee dance language is used to communicate information about:
a. when grubs should be fed
b. the movement and location of the queen
c. the location of pollen and nectar sources
d. the presence of intruders in the hive

21. What are two things that bees do to nectar to turn it into honey?
a.
b.


22. Mead is
a. material produced by bees from plant resins, used to seal the hive
b. honey wine, produced by fermenting a mixture of water and honey
c. the substance fed to grubs who are to become queens
d. the secretion of a series of glands located on the ventral side of the bee's abdomen

23. List two attributes of beeswax that make it such useful material:
a.
b.

24. When consumed by humans, royal jelly
a. restores youth
b. prolongs life
c. enhances the sex drive
d. none of the above

26. What was Reverend L. L. Langstroth's principal contribution to apiculture?


27. List two reasons honey is widely used in the baking industry:
a.
b.

28. In plants, __________ is produced in structures called anthers. Insect pollinators collect pollen and deliver it to the stigma, the receptive surface of the ____________.

29. Match the pollination syndrome with the floral characteristics:
a. moth pollination 1. fetid odor, purplish colors
b. fly pollination 2. nocturnal anthesis, pale colors
c. butterfly pollination 3. bright colors, long thin spurs
d. beetle pollination 4. open flowers, abundant pollen

30. How do bees carry pollen back to the hive?
a. in their crop
b. on their corbicula
c. on their tongues
d. on their wings

31. The economic value of bee pollination in the US each year is on the order of:
a. 100 million dollars
b. one billion dollars
c. ten billion dollars
d. 100 billion dollars

32. Provide an example that proves the following statement false:
In the phylum Arthropoda, herbivores are found only in the class Insecta.

33. Insects that suck plant sap can be found in the order a. Orthoptera
b. Coleoptera
c. Homoptera
d. Megaloptera

34. Two characteristics that make plants less than ideal food for insects include:
a.
b.

35. Water and nutrients in a plant vascular system are carried in the xylem, which is consumed by ____________; carbohydrates are transported in the phloem, which is consumed by _________.

36. Two environmental cues that are known to promote the appearance of locusts are:
a.
b.

37. True or false: The shorter the generation time, the greater the reproductive potential.

38. Classify the following mortality factors are density-dependent or density-independent:
a. parasitism
b. flooding

39. Locusts breed in the Intertropical Convergence Zone because:
a. predators are relatively rare there
b. they feed exclusively on a particular type of vegetation that grows abundantly there
c. moisture conditions are conducive to high survival of eggs and nymphs
d. human control efforts have excluded them from other parts of their natural range.

40. True or false: All members of the order Homptera are phytophagous.

41. Plant diseases transmitted by homopterans are of two types: some are _________-_________ while others are ______________.

42. Match the host plant with the homopteran of economic importance:
a. cochineal 1. tamarisk
b. lac scale 2. prickly pear
c. manna scale 3. fig and banyan tree

43. List two properties of lac that make it a useful material:
a.
b.

44. Trabutina mannipara is a source of _____________.

45. What useful service does the cochineal scale provide with respect to its hostplant?


46. Fibroin is:
a. the proteinaceous inner layer of silk thread
b. the gummy outer layer of silk thread
c. the principal component of Bombyx mori sex pheromone
d. a unit of measure used in the silk industry

47. Provide an example that proves the following statement false:
Bombyx mori is the only commercial lepidopteran source of silk.





48. Which country is the leading producer of silk today?
a. India
b. Japan
c. China
d. Italy

49. Louis Pasteur identified the causative agent of pebrine, a microbial disease of ____________.

50. Aside from caterpillars, what other arthropods are used as commercial sources of silk?

Give an example of a product made with silk from this source.

51. List two anatomical traits that characterize gallmakers in general:
a.
b.

52. The vast majority of gallmakers are found in two orders; these are
a. Coleoptera and Lepidoptera
b. Diptera and Hymenoptera
c. Homoptera and Hemiptera
d. Siphonaptera and Ephemeroptera

53. The Aleppo gall is useful because it is a source of __________ ___________.

54. The pamakani gall fly is useful because a. it is used in the production of ink
b. it is a biological control agent for prickly pear cactus
c. it is a biological control agent for Mexican devil weed
d. it is a commercial source of silk

55. Two orders in which large numbers of stored product pests are found are:
a. Coleoptera and Lepidoptera
b. Diptera and Hymenoptera
c. Homoptera and Hemiptera
d. Siphonaptera and Ephemeroptera

56. Two physiological or morphological adaptations possessed by many stored product insects include
a.
b.

57. Most stored product pests are descended from:
a. aquatic species
b. species that feed on grain caches in rodent nests
c. species that feed on leaves of flowering plants
d. species that feed on mushrooms, molds, and other fungi

58. Provide the common names of two species of cockroaches found living in houses in the United States:
a.
b.



59. In what part of the alimentary system are digestive and detoxificative enzymes produced?
a. foregut
b. midgut
c. hindgut\
d. hemolymph

60. Which of the following orders contains ONLY wingless species?
a. Homoptera
b. Psocoptera
c. Thysanura
d. Dermaptera