True/False — Indicate “T” for true; “F” for false:
1. Spiders, ticks, and horseshoe crabs belong to the subphylum
2. The flexible regions of an insect's exoskeleton contain high
concentrations of quinone crosslinkages.
3. The immatures of hemimetabolous insects are known as nymphs or
4. Trichoptera and Neuroptera are the only insect orders that have
5. The epiproct and paraprocts are abdominal structures that form
parts of the external genitalia in most insects.
6. The chorion is a protective membrane that surrounds the embryo
in an unfertilized egg.
7. Abdominal prolegs are usually present in scarabaeiform,
campodeiform, and eruciform larvae.
8. Apodemes and apophyses increase the rigidity of the insect's
exoskeleton and provide sites for muscle attachment.
Multiple Guess: Choose the BEST answer.
9. Chewing mouthparts are NOT found in:
A. Crickets C. Thrips
B. Weevils D. Earwigs
10. Which statement about insect development is CORRECT?
A. The embryo is nourished by yolk stored in the egg.
B. The germ band develops inot the embryo.
C. The serosa forms the yolk sac membrane.
D. All of these.
11. Which part of a molt does NOT occur during apolysis?
A. Formation of new epicuticle
B. Resorption of old endocuticle.
C. Formation of new quinone crosslinkages.
D. Activation of molting fluid.
12. Which order is BOTH ectognathous and wingless?
A. Collembola C. Siphonaptera
B. Thysanoptera D. Diplura
13. Why are termites classified as orthopteroids?
A. They are wingless
B. They have cerci and chewing mouthparts
C. They are social insects
D. All of these
14. A terrestrial arthropod with more than five pairs of legs
could NOT be a(n):
A. Isopod C. Centipede
B. Arachnid D. Symphylan
15. Which group of insects has incomplete metamorphosis?
A. Fleas C. Beetles
B. Flies D. Bugs
16. Which insects do NOT feed on plants?
A. Thrips C. Whiteflies
B. Lacewings D. Sawflies
In questions 17-23 indicate the letter of the class or order that is
most closely related (phylogenetically) to the group listed at the
17. Lepidoptera A. Coleoptera C. Hymenoptera
B. Trichoptera D. Diptera
18. Phasmatodea A. Thysanoptera C. Collembola
B. Grylloblattodea D. Trichoptera
19. Psocodea A. Hemiptera C. Diptera
B. Plecoptera D. Coleoptera
20. Odonata A. Zygentoma C. Ephemeroptera
B. Neuroptera D. Blattodea
21. Insecta A. Crustacea C. Arachnida
B. Trilobita D. Onychophora
22. Dermaptera A. Plecoptera C. Isoptera
B. Diplura D. Coleoptera
23. Symphyla A. Insecta C. Arachnida
B. Chilopoda D. Isopoda
Match each insect in the left column with one in the right column
that belongs to the SAME order. Letters may be used once, more than
once, or not at all.
24. Cricket A. Ant lion
25. Lacewing C. Mosquito
26. Weevil E. Katydid
27. Firebrat G. Termite
28. Aphid I. Beetle
29. House fly K. Damselfly
33. In the space below, draw the thorax of a typical insect and show
the relative locations of: A. Mesepimeron
D. Mesopleural suture
Use the following key to indicate the embryological origin of all
structures in questions 34-43:
34. Epidermis A. Mesoderm
35. Heart C. Endoderm
D. Germ cells
In questions 44-48 describe how the wings are "unique" in each of
these orders (that is, how do these wings differ from the wings of
all other insect orders?)
Give the correct ENTOMOLOGICAL term for:
49. The basal segment of the antenna.
50. Entry hole for sperm in an insect's egg.
51. The "egg case" of a cockroach.
52. The "front lip" of a mandibulate insect.
53. The "penis" in a male insect.
Give the FUNCTION of:
55. Saltatorial legs
59. ESSAY: What are the physical characteristics and developmental
stages shared by all holometabolous orders that make
them different from other insects? Name and describe
as many of these differences as you can -- both, for
adults and for immatures.