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| 1 | Millipedes belong to the arthropod class |
 | A) | Hexapoda. |
| B) | Chilopoda. |
| C) | Diplopoda. |
| D) | Crustacea. |
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| 2 | Centipedes belong to the arthropod class |
| A) | Hexapoda. |
| B) | Chilopoda. |
| C) | Diplopoda. |
| D) | Crustacea. |
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| 3 | Members of this class feed on decaying plant matter, possess repugnatorial glands, and possess two pairs of appendages per apparent segment. |
| A) | Hexapoda |
| B) | Chilopoda |
| C) | Diplopoda |
| D) | Crustacea |
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| 4 | Members of this class live in forest-floor litter, where they feed on fungi, humus, and other decaying organic matter. Their body consists of 11 segments and 9 pairs of legs. |
| A) | Symphyla |
| B) | Chilopoda |
| C) | Diplopoda |
| D) | Pauropoda |
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| 5 | The thoracic tagmata of an insect often has a pair of wings on |
| A) | the prothorax only. |
| B) | the prothorax and mesothorax. |
| C) | the mesothorax and metathorax. |
| D) | the metathorax only. |
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| 6 | Insect flight, in which muscles act to change the shape of the exoskeleton during both upward and downward wing beats, is called ______ flight. |
| A) | synchronous |
| B) | asynchronous |
| C) | tympanal |
| D) | regulatory |
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| 7 | Which of the following mouthparts of a chewing insect, like a grasshopper, is primarily a sensory, liplike structure and is the anterior-most mouthpart? |
| A) | mandible |
| B) | maxilla |
| C) | labrum |
| D) | labium |
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| 8 | The smallest branches of an insect's respiratory system exchange respiratory gases at the level of body cells. These smallest branches are called |
| A) | tracheal trunks. |
| B) | tracheoles. |
| C) | Johnston's organs. |
| D) | Malpighian organs. |
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| 9 | Sensory structures found in the legs of crickets, the abdomen of grasshoppers, and the thorax of some moths detect pressure (sound) waves in the air. These sensory structures are called |
| A) | ommatidia. |
| B) | tympanal organs. |
| C) | Johnston's organs. |
| D) | Malpighian organs. |
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| 10 | The light collecting area of a compound eye that converts light energy into a nerve impulse is called the |
| A) | retinula cell. |
| B) | crystalline cone. |
| C) | rhabdome. |
| D) | pigment cell. |
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| 11 | A ______ is (are) a protective case(s) for the pupal stage of an insect that is formed from the last larval exoskeleton. |
| A) | cocoon |
| B) | puparium and cocoon |
| C) | puparium and chrysalis |
| D) | chrysalis and cocoon |
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| 12 | Insect development in which immatures are very different from the adult in body form, behavior, and habitat is called ______ metamorphosis. |
| A) | ametabolous |
| B) | hemimetabolous |
| C) | holometabolous |
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| 13 | Mayfly development occurs through a gradual series of changes, but the immatures are very different from the adults. These immatures are called _________________. |
| A) | larvae |
| B) | nymphs |
| C) | naiads |
| D) | pupae |
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| 14 | Insect development in which molting continues after sexual maturity and in which immatures resemble adults is called ______ metamorphosis. |
| A) | ametabolous |
| B) | hemimetabolous |
| C) | holometabolous |
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| 15 | Social insects include those in the orders |
| A) | Isoptera and Diptera. |
| B) | Diptera and Coleoptera. |
| C) | Diptera and Hymenoptera. |
| D) | Hymenoptera and Isoptera. |
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| 16 | Myriapoda includes scorpions, centipedes, and proturans. |
| A) | True |
| B) | False |
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| 17 | The wings of a midge may beat at frequencies of 1,000 cycles per second, which is much faster than the frequency of nerve impulses to flight muscles. |
| A) | True |
| B) | False |
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| 18 | Insects are not capable of regulating their body temperature. |
| A) | True |
| B) | False |
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| 19 | Gas exchange in insects involves respiratory pigments dissolved in the hemolymph. |
| A) | True |
| B) | False |
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| 20 | Insects excrete uric acid using Malpighian tubules, which empty into the gut tract at the junction of the midgut and the hindgut. Because uric acid can be excreted as a semisolid, this excretory mechanism minimizes water loss and aids an insect's life on land. |
| A) | True |
| B) | False |
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| 21 | An insect's compound eyes probably form images, but more importantly, they are adapted for detecting movement. |
| A) | True |
| B) | False |
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| 22 | Most of the water and salts present in the digestive tract of an insect are absorbed from the digestive tract through the midgut. |
| A) | True |
| B) | False |
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| 23 | Recent reevaluations of arthropod phylogeny suggest that the subphylum Crustacea may be a paraphyletic group. |
| A) | True |
| B) | False |
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| 24 | Because insects are vectors for diseases that affect humans; their economic cost to humans far outweighs their beneficial effects. |
| A) | True |
| B) | False |
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| 25 | Virtually all zoologists agree that the phylum Arthropoda is a monophyletic grouping. |
| A) | True |
| B) | False |