True/False — Indicate “T” for true; “F” for false:
1. Isoptera is more closely related to Phasmatodea than to Hemiptera.
2. Thysanoptera is more closely related to Hemiptera than to
Hymenoptera.
3. Mecoptera is more closely related to Trichoptera than to
Orthoptera.
4. Chilopoda is more closely related to Insecta than to Arachnida.
5. Crustacea is more closely related to Arachnida than to Insecta.
Multiple Guess: Choose the BEST answer.
6. The pedicel is the name for the:
A. 1st leg segment C. 1st antennal segment
B. 2nd leg segment D. 2nd antennal segment
7. Which hormone would NOT be found in adult insects?
A. Brain hormone (PTTH) C. Juvenile hormone
B. Eclosion hormone D. All of these
8. Aquatic immatures of All holometabolous insects are known as:
A. Nymphs C. Larvae
B. Naiads D. Young
9. Suppose you find an interesting arthropod living on the bottom
of a fresh water pond. It has eyes, antennae, mandibles, and
10 pairs of legs. You conclude that this organism belongs in
the class:
A. Insecta C. Crustacea
B. Diplopoda D. Arachnida
10. "Lumpers" sometimes include Blattodea and Phasmida as
suborders of:
A. Hemiptera C. Orthoptera
B. Psocodea D. Neuroptera
11. Chewing mouthparts are NOT found in:
A. Thrips C. Crayfish
B. Millipedes D. Bees
12. Which order is exclusively herbivorous?
A. Hemiptera C. Odonata
B. Phasmida D. Thysanoptera
13. In insect development, the germ band:
A. Forms the amnionic membrane.
B. Differentiates into three germ layers.
C. Gives rise to the cleavage and activation centers.
D. Remains undifferentiated throughout the larval stages.
14. 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
15. In larval insects, which hormone inhibits the development of
imaginal discs?
A. Juvenile hormone
B. Eclosion hormone
C. Brain hormone
D. Ecdysteroids
Short Answer
16. Which ametabolous order does NOT have endognathous mouthparts?
17. Which endopterygote order does NOT have wings?
18. Which mandibulate class is NOT terrestrial?
19. Which Orthopteroid order is predatory?
20. Which Paleopterous order does not feed as adults?
Give the correct order name for each of the following common names:
21. Webspinners
22. Ant lions
23. Caddisflies
24. Silverfish
25. Sawflies
26. The table below lists the developmental fate of the three germ
layers. Cross out all INCORRECT entries.
Germ Layer Developmental Fate
======================================================================
Endoderm Blood cells, Midgut, Heart, Sperm
----------------------------------------------------------------------
Ectoderm Integument, Cerci, Eyes, Hindgut
----------------------------------------------------------------------
Mesoderm Nerves, Brain, Muscles, Gonads
----------------------------------------------------------------------
27. The diagram below illustrates a transverse section through the
mesothorax of an alate insect. Draw and/or label each of the
following structures:
A. Furca
B. Trochanter
C. Mesonotum
D. Direct flight muscle
Short Answer: Give the correct ENTOMOLOGICAL term for:
28. The "shell" of an insect's egg
29. The "penis" in a male insect
30. "Simple" eyes
31. The "front lip" of a mandibulate insect
32. The body form of a "wireworm"
33. "Shedding" the old exoskeleton
34. The "front wings" of the Orthoptera
35. The "egg case" of a cockroach
36. A hardened "plate" of the exoskeleton
37. The "hair" on an insect's body
List ONE function for each of the following:
38. Oosome:
39. Halteres:
40. Hamuli:
41. Epicuticle:
42. Corpora allata:
43. Tentorium:
44. Micropyle:
Essay
45. A rare form of the AIDS virus has recently mutated into a new
biotype that is extremely pathogenic to all arthropods! This
disease is spreading rapidly across the planet and is expected to
eliminate all insect life within two years! Describe at least five
major biological consequences that such a mass extinction will have
on human life.
