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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
lack yolk
B
be infertile and not develop
C
be diploid and develop without fertilization
D
be haploid and only develop if fertilized
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
lacks circular muscles to antagonize the longitudinal muscles and must rely on the rigid cuticle and hydrostatic pressure
C
extends muscle cells to the nerve process
D
does not use the Krebs cycle and electron transport chain in anaerobic parasitic species
3) If the main disease symptom is anemia (low red blood cell count) the most likely nematode parasite is
A
pinworm
B
Ascaris
C
Trichinella
D
hookworm
4) Dogs commonly suffer from heartworm caused by
A
eating raw meat infected with Trichinella
B
Dirofilaria nematodes
C
nematodes consumed as eggs in contaminated water
D
a tapeworm consumed in raw meat
5) Copulatory spicules function to
A
store sperm in the male until copulation occurs
B
store sperm in the female after copulation
C
attract the female
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
blockage of the intestines
B
starvationfrom lack of nutrition because it is absorbing all you food
C
anemia
D
destruction of tissues as it migrates through your body
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
Ascaris
B
pinworm
C
hookworm
D
Trichinella
8) Nematomorphs
A
are rare
B
are found in the host's liver
C
are free-living as adults but parasitic on arthropods as juveniles
D
are called spiny-headed worms
9) Which of the following is NOT correct about nematodes
A
nematodes lack circular muscles
B
there are three layers of tissues in the body
C
the body cavity provides a hydrostatic skeleton
D
nematodes are all carnivores but may be free-living or parasitic
10) In what two roundworm parasite cycles do worms get coughed up and swallowed in order to complete their cycle
A
elephantiasis and trichina
B
ascaris and hookworm
C
hookworm and trichina
D
ascaris and hookworm
*select an answer for all questions
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