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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
burrow constantly through muscle tissues
B
hook onto the intestine and consume blood and tissue fluids ausing anemia
C
cluster in blood vessels in the liver and clog the veins
D
have an anterior end that curves like a hook
2) Elephantiasis is transferred by
A
worms burrowing into skin of feet
B
mosquitoes injecting larval worms into the bloodstream
C
eating uncooked elephant meat
D
drinking contaminated water or food
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
most of the population wears shoes
C
we usually cook our meat and there are few raw meat dishes
D
much of the U.S. has bitter cold winters
4) Elephantiasis is an enlargement of legs, arms, scrotum, and other tissues caused by
A
a large number of Trichinella worms encysting in our muscles
B
microscopic nematodes that reproduce and clog lymph glands, causing infection and limbs to swell
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
respiration
B
swimming
C
capturing and grinding food
D
pumping blood
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
pinworm
C
Ascaris
D
tapeworm
7) The parasite found in the U.S. where people contract it by eating poorly cooked pork, bear meat, etc
A
Trichinella
B
hookworm
C
pinworm
D
ascaris
8) Rotifers get their name from
A
their ability to tumble across the pond bottom
B
circles of beating cilia that appear to be rotating wheels
C
feeding on decomposing material
D
swimming in circles
9) Which of these is not a nematode?
A
schistosoma mansoni
B
trichinella
C
ascaris
D
wucheria
10) juvenile trichinella worms live in the
A
skeletal muscle
B
lungs
C
liver
D
intestines
*select an answer for all questions
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