Ch. 30 Lab Manual Flashcards

1
Q
  1. Ecdysis is the process of _____________.
    a. obtaining heat
    b. releasing heat
    c. molting
    d. mating
A

molting

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2
Q
  1. Presently, there are more than ___________ species of Arthropoda.
    a. 1,000
    b. 10,000
    c. 100,000
    d. 1,000,000
A

1,000,000

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3
Q
  1. Members of phylum Nematoda live in which of the following environments?
    a. Soil.
    b. Freshwater and marine.
    c. Within animals, as parasites.
    d. All of the above.
    e. B and C.
A

All of the above

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4
Q
  1. Rich topsoil can contain more than how many nematodes per acre?
    a. 1 thousand.
    b. 1 million.
    c. 1 billion.
    d. 1 trillion.
A

1 Billon

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5
Q
  1. Unlike spiders, harvestmen, also known as “daddy longlegs,” have ____.
    a. a cephalothorax and abdomen
    b. a single pair of eyes
    c. eight legs
    d. fangs
A

a single pair of eyes

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6
Q
  1. “Daddy longlegs” are ________________.
    a. the most venomous animal to humans
    b. venomous to most mammals, excluding humans
    c. harmless; they do not even have fangs
    d. not venomous to humans
A

not venomous to humans

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7
Q
  1. Nematodes move in a thrashing fashion by using ______.
    a. circular muscles
    b. longitudinal muscles
    c. cilia
    d. mucus
A

longitudinal muscles

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8
Q
  1. How many pairs of legs do most species of centipedes have?
    a. 100
    b. 50
    c. 30
    d. 60
A

30

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9
Q
  1. Millipedes are ________________.
    a. carnivorous
    b. detritivorous
    c. herbivorous
    d. all of the above
    e. B and C
A

B and C

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10
Q
  1. The study of insects is called _____________.
    a. etymology
    b. biology
    c. enthology
    d. entomology
A

entomology

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11
Q
  1. What type of coelom is found in the phylum Nematoda?
    a. True coelom.
    b. Pseudocoelom.
    c. Acoelomate.
    d. A and B, depending on the species of nematode.
A

Pseudocoelom

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12
Q
  1. The grasshopper’s tympanic organs are responsible for _____.
    a. hearing
    b. breathing
    c. excreting
    d. mating
A

hearing

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13
Q
  1. What makes ecdysozoans particularly vulnerable to prey?
    a. Their small size.
    b. Lack of camouflage.
    c. Shedding of protective cuticle or exoskeleton.
    d. Damage caused by ecdysis.
A

Shedding of protective cuticle or exoskeleton

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14
Q
  1. Which of the following is a characteristic of a nematode?
    a. Tapered at both ends.
    b. Protective cuticle.
    c. Circular muscles.
    d. All of the above.
    e. A and B.
A

A and B.

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15
Q
  1. What feature of Ascaris distinguishes a specimen as male?
    a. The presence of a rectum.
    b. A length of 30 cm or more.
    c. Posterior end is curved.
    d. Coloration.
A

Posterior end is curved.

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16
Q
  1. What is the function of the green gland in the crayfish?
    a. Digestive.
    b. Reproductive.
    c. Excretory.
    d. None of the above.
A

c. Excretory.

17
Q
  1. Horseshoe crabs lack which of the following?
    a. Mandibles.
    b. Walking legs.
    c. Antennae.
    d. All of the above.
    e. A and C.
A

d. All of the above.

18
Q
  1. Horseshoe crabs utilize _____________for breathing.
    a. book gills
    b. tracheae
    c. body surface
    d. book lungs
A

a. book gills

19
Q
  1. All members of subphylum Myriapoda ______.
    a. live only on land
    b. are herbivorous
    c. lack a chitinous exoskeleton
    d. live on land and in freshwater
A

a. live only on land

20
Q
  1. Insects vary from other arthropods by having _______________.
    a. three pairs of wings and two pairs of legs
    b. one pair of wings and three pairs of legs
    c. two pairs of wings and three pairs of legs
    d. two pairs of wings and eight pairs of legs
A

two pairs of wings and three pairs of legs

21
Q
  1. Female pinworms will migrate to which opening of an infected host?
    a. Mouth.
    b. Anus.
    c. Eyes.
    d. Ears.
A

Anus.

22
Q
  1. Name this structure in the crayfish.

a. Teeth.
b. Mandible.
c. Gastric mill.
d. Green gland.

A

b. Mandible.

23
Q
  1. These organisms are thought to be the ancestors of all living arthropods.
    a. Horseshoe crabs.
    b. Trilobite-like organisms.
    c. Members of the subphylum Chelicerata.
    d. None of the above.
A

b. Trilobite-like organisms.

24
Q
  1. What does a millipede do when it is disturbed?
    a. It gives a poisonous bite.
    b. It shocks its prey with venom claws.
    c. It secretes a poisonous mucus from the chitinous exoskeleton.
    d. It emits a foul-smelling odor.
A

d. It emits a foul-smelling odor.

25
Q
  1. Which of the following have bodies divided into a head, thorax, and abdomen?
    a. Grasshoppers.
    b. Crayfish.
    c. Ants.
    d. A and C.
A

d. A and C.

26
Q
  1. Which of the following characteristics are found in the grasshopper?
    a. Body divided into a head, thorax, and abdomen.
    b. Two pair of wings.
    c. Body divided into cephalothorax and abdomen.
    d. A and B.
    e. B and C.
A

d. A and B.

27
Q
  1. Name this structure in the crayfish.

a. Brain.
b. Mandibular muscle.
c. Gastric muscle.
d. Green gland.

A

d. Green gland.

28
Q
  1. What is the function of pleopods in crustaceans?
    a. Swimming.
    b. Steering.
    c. Eating.
    d. Breathing.
A

a. Swimming.

29
Q
  1. Which pairing of arthropods does not belong in the same subphylum?
    a. Copepods and shrimp.
    b. Mosquito and housefly.
    c. Centipede and scorpion.
    d. Spider and dust mite.
A

c. Centipede and scorpion.

30
Q
  1. Infection from a ______ can cause stunted growth because of protein deficiency.
    a. pinworm
    b. hookworm
    c. ringworm
    d. heartworm
A

b. hookworm