Parasitology Exam 3
1. Which of the following is affected by the hydrostatic skeleton in nematodes?
a) locomotion
b) feeding
c) reproduction
d) gamete formation
e) all of the above
2. Which of the following is not a characteristic of the secretory-excretory system in
nematodes?
a) 2 long canals in lateral hypodermis
b) flame cells
c) excretion occurs via intestine
d) presence of excretory pore
e) none of the above
3. Which of the following is not a characteristic of nematodes?
a) bilaterally symmetrical
b) syncytial tegument
c) pseudocoelomate
d) dioecious
e) all of the above
4. Which of the following helps to ensure food moves through the digestive system in
nematodes?
a) hydrostatic pressure
b) newly ingested food
c) locomotion
d) posterior bulb
e) all of the above
5. Which component is responsible for the S-shaped locomotion seen in nematodes?
a) lateral somatic muscle
b) circular somatic muscle
c) smooth muscle
d) longitudinal somatic muscle
e) none of the above
6. Which of the following is not a functional component of the nematode hydrostatic skeleton?
a) somatic musculature
b) cuticle
c) microtriches
, d) hemolymph
e) none of the above
7. Which of the following is not characteristic of male nematodes?
a) males are generally smaller
b) tail of males are more curled
c) males have cloaca
d) spermatozoa use pseudopodium
e) none of the above
8. How many molts take place before a nematode reaches the adult stage?
a) 1 molt
b) 2 molts
c) 3 molts
d) 4 molts
e) none of the above
9. Which nematode species covered can cause rectal prolapse?
a) Trichinella spiralis
b) Ascaris lumbricoides
c) Trichuris trichiura
d) Strongyloides stercoralis
e) none of the above
10.Which of the following is not capable of autoinfection?
a) Hymenolepis nana
b) Strongyloides stercoralis
c) Trichuris trichiura
d) Taenia solium
e) all of the above
11.Which of the following is an epidemiological factor for Trichuris trichiura?
a) house fly
b) low sanitation standards
c) night soil for fertilizer
d) moist soil and dense shade
e) all of the above
12.Which nematode species covered can utilize a human as both intermediate and definitive
host?
a) Ascaris lumbricoides
b) Trichinella spiralis
c) Trichuris trichiura
1. Which of the following is affected by the hydrostatic skeleton in nematodes?
a) locomotion
b) feeding
c) reproduction
d) gamete formation
e) all of the above
2. Which of the following is not a characteristic of the secretory-excretory system in
nematodes?
a) 2 long canals in lateral hypodermis
b) flame cells
c) excretion occurs via intestine
d) presence of excretory pore
e) none of the above
3. Which of the following is not a characteristic of nematodes?
a) bilaterally symmetrical
b) syncytial tegument
c) pseudocoelomate
d) dioecious
e) all of the above
4. Which of the following helps to ensure food moves through the digestive system in
nematodes?
a) hydrostatic pressure
b) newly ingested food
c) locomotion
d) posterior bulb
e) all of the above
5. Which component is responsible for the S-shaped locomotion seen in nematodes?
a) lateral somatic muscle
b) circular somatic muscle
c) smooth muscle
d) longitudinal somatic muscle
e) none of the above
6. Which of the following is not a functional component of the nematode hydrostatic skeleton?
a) somatic musculature
b) cuticle
c) microtriches
, d) hemolymph
e) none of the above
7. Which of the following is not characteristic of male nematodes?
a) males are generally smaller
b) tail of males are more curled
c) males have cloaca
d) spermatozoa use pseudopodium
e) none of the above
8. How many molts take place before a nematode reaches the adult stage?
a) 1 molt
b) 2 molts
c) 3 molts
d) 4 molts
e) none of the above
9. Which nematode species covered can cause rectal prolapse?
a) Trichinella spiralis
b) Ascaris lumbricoides
c) Trichuris trichiura
d) Strongyloides stercoralis
e) none of the above
10.Which of the following is not capable of autoinfection?
a) Hymenolepis nana
b) Strongyloides stercoralis
c) Trichuris trichiura
d) Taenia solium
e) all of the above
11.Which of the following is an epidemiological factor for Trichuris trichiura?
a) house fly
b) low sanitation standards
c) night soil for fertilizer
d) moist soil and dense shade
e) all of the above
12.Which nematode species covered can utilize a human as both intermediate and definitive
host?
a) Ascaris lumbricoides
b) Trichinella spiralis
c) Trichuris trichiura
