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Ch15
Test Description: Pseudocoelomate animals: roundworms and rotifers
Instructions: Answer all questions to get your test result.
1) the name hookworms is due to the fact they
A
cluster in blood vessels in the liver and clog the veins
B
hook onto the intestine and consume blood and tissue fluids ausing anemia
C
burrow constantly through muscle tissues
D
have an anterior end that curves like a hook
2) Elephantiasis is transferred by
A
eating uncooked elephant meat
B
drinking contaminated water or food
C
worms burrowing into skin of feet
D
mosquitoes injecting larval worms into the bloodstream
3) Which of the following is NOT a factor that protects North Americans from many parasitic worm infections
A
we have superior drugs and surgeons
B
we usually cook our meat and there are few raw meat dishes
C
much of the U.S. has bitter cold winters
D
most of the population wears shoes
4) Elephantiasis is an enlargement of legs, arms, scrotum, and other tissues caused by
A
microscopic nematodes that reproduce and clog lymph glands, causing infection and limbs to swell
B
a large number of Trichinella worms encysting in our muscles
C
an infection of the human coelom by Ascaris
D
contracting a disease that usually occurs in elephants
5) The mastax of a rotifer is used for
A
capturing and grinding food
B
respiration
C
pumping blood
D
swimming
6) Which of these parasites does NOT enter the mouth of its human host and leave as eggs with the human feces
A
hookworm
B
tapeworm
C
pinworm
D
Ascaris
7) The parasite found in the U.S. where people contract it by eating poorly cooked pork, bear meat, etc
A
ascaris
B
pinworm
C
Trichinella
D
hookworm
8) Rotifers get their name from
A
feeding on decomposing material
B
circles of beating cilia that appear to be rotating wheels
C
their ability to tumble across the pond bottom
D
swimming in circles
9) Which of these is not a nematode?
A
ascaris
B
wucheria
C
schistosoma mansoni
D
trichinella
10) juvenile trichinella worms live in the
A
skeletal muscle
B
liver
C
intestines
D
lungs
*select an answer for all questions
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