Exam 1 – Version A

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 

 3.  Mecoptera is more closely related to Trichoptera than to 

 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:


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.
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