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Chapter 15 Part 2
Test Description: Pseudocoelomate animals
Instructions: Answer all questions to get your test result.
1) Amictic eggs would
A
be infertile and not develop
B
lack yolk
C
be haploid and only develop if fertilized
D
be diploid and develop without fertilization
2) In contrast to the function of our bodies, nematode is unusual in so far as it
A
all of the choices are unusual nematode adaptations
B
does not use the Krebs cycle and electron transport chain in anaerobic parasitic species
C
extends muscle cells to the nerve process
D
lacks circular muscles to antagonize the longitudinal muscles and must rely on the rigid cuticle and hydrostatic pressure
3) If the main disease symptom is anemia (low red blood cell count) the most likely nematode parasite is
A
hookworm
B
Trichinella
C
pinworm
D
Ascaris
4) Dogs commonly suffer from heartworm caused by
A
nematodes consumed as eggs in contaminated water
B
Dirofilaria nematodes
C
a tapeworm consumed in raw meat
D
eating raw meat infected with Trichinella
5) Copulatory spicules function to
A
attract the female
B
store sperm in the male until copulation occurs
C
store sperm in the female after copulation
D
deliver sperm to the female vagina or gonopore
6) If you are discovered to have an infection of Ascaris worms, your most likely danger is
A
starvationfrom lack of nutrition because it is absorbing all you food
B
destruction of tissues as it migrates through your body
C
anemia
D
blockage of the intestines
7) The mild nematode infection somewhat common among children in the southern U.S. and transmitted as eggs from the anal to oral regions by the hands is
A
pinworm
B
hookworm
C
Ascaris
D
Trichinella
8) Nematomorphs
A
are rare
B
are free-living as adults but parasitic on arthropods as juveniles
C
are called spiny-headed worms
D
are found in the host's liver
9) Which of the following is NOT correct about nematodes
A
nematodes are all carnivores but may be free-living or parasitic
B
the body cavity provides a hydrostatic skeleton
C
there are three layers of tissues in the body
D
nematodes lack circular muscles
10) In what two roundworm parasite cycles do worms get coughed up and swallowed in order to complete their cycle
A
ascaris and hookworm
B
elephantiasis and trichina
C
ascaris and hookworm
D
hookworm and trichina
*select an answer for all questions
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