BIO 1500- Exam 4
1. 1. Centipedes:
a. have a hundred pairs of legs.
b. have venomous fangs.
c. are herbivores.
d. have two pair of legs per segment.
e. love to fetch sticks.: b. have venomous fangs
2. 2. The side to side thrashing of a nematode is accomplished by contraction
of its circular muscles.
a. True
b. False: b. False
,3. 3. Which one of the following incorrectly matches a molluscan structure with
its typical function?
a. mantle—secretion of the shell (when present)
b. visceral mass—houses the gills and the exit openings of the excretory,
reproductive & digestive organs
c. foot—locomotion
d. nephrostome—collection of nitrogenous wastes
e. radula—feeding organ: b. visceral mass—houses the gills and the exit openings of the excretory,
reproductive & digestive organs
4. 4. Each segment of an annelid typically contains bristles of chitin called:
a. cilia.
b. parapodia.
, c. chaetae.
d. leglets.
e. hyphae: c. chaetae
5. 5. How would an earthworm stretch its body to reach a patch of dirt after
crossing a hot sidewalk?
a. Contraction of the circular muscles
b. Contraction of the longitudinal muscles: a. Contraction of the circular muscles
6. 6. In terms of numbers of species, the most successful phylum on the planet
is the:
a. Mollusca.
1. 1. Centipedes:
a. have a hundred pairs of legs.
b. have venomous fangs.
c. are herbivores.
d. have two pair of legs per segment.
e. love to fetch sticks.: b. have venomous fangs
2. 2. The side to side thrashing of a nematode is accomplished by contraction
of its circular muscles.
a. True
b. False: b. False
,3. 3. Which one of the following incorrectly matches a molluscan structure with
its typical function?
a. mantle—secretion of the shell (when present)
b. visceral mass—houses the gills and the exit openings of the excretory,
reproductive & digestive organs
c. foot—locomotion
d. nephrostome—collection of nitrogenous wastes
e. radula—feeding organ: b. visceral mass—houses the gills and the exit openings of the excretory,
reproductive & digestive organs
4. 4. Each segment of an annelid typically contains bristles of chitin called:
a. cilia.
b. parapodia.
, c. chaetae.
d. leglets.
e. hyphae: c. chaetae
5. 5. How would an earthworm stretch its body to reach a patch of dirt after
crossing a hot sidewalk?
a. Contraction of the circular muscles
b. Contraction of the longitudinal muscles: a. Contraction of the circular muscles
6. 6. In terms of numbers of species, the most successful phylum on the planet
is the:
a. Mollusca.
