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Question 1

Helminthes of class Nematoda characterized by the following except

Answer 1

females usually shorter and thiner than males

Question 2

infection of the final host by Nematodes occurs by

Answer 2

all the above

Question 3

The main significance of Dipetalonema reconditum in veterinary medicine is

Answer 3

microfilariae are similar in appearance to those of Dirofilaria immitis and thus may confound diagnosis

Question 4

Visceral larva migrans is due to

Answer 4

ingestion of embryonated ascaris eggs of dog and cat

Question 5

The chief morphological differences between ancylostma caninum and necator americanus in adult stage is the

Answer 5

presence of ventral teeth or cutting plates

Question 6

Although now rarely seen in managed horses, the migrating larvae of this large strongyle can cause severe inflammation in the wall of the cranial mesenteric artery:

Answer 6

Strongylus vulgaris

Question 7

A 5-month old puppy vomits a mass of thick stout white nematodes. On close inspection, you note the presence of 3 lips at the anterior end of each of the worms. What parasite is this most likely to be?

Answer 7

Toxocara canis.

Question 8

Which of the following nematodes is free-living by nature. but occasionally causes opportunistic infections associated with dermatitis in animals?

Answer 8

Strongvloides

Question 9

Horses are not considered a likely natural host for Trichinella spp. because they are:

Answer 9

Herbivores

Question 10

A mixed breed dog that is housed outdoors on soil in a run presents with lesions on its ventral and dorsal surfaces of all four feet, sternum, and ventral abdomen. The areas are erythematous, thickened, and alopecic. The owner informs you that ever since the dog was adopted two years ago from a neighbor. the dog has only had yearly routine vaccinations (rabies). The organism responsible for these lesions is most likely:

Answer 10

Ancylostoma caninum.

Question 11

You examine a herd of goats with pale mucous membranes & submandibular edema. Necropsy examination of one goat reveals nematodes in the abomassum with a characteristic spirally-striped, “barber pole” appearance. What parasite is this most likely to he?

Answer 11

Haemonchus controtus

Question 12

The dcfenitive host of Heterakis gallinarurm is.

Answer 12

Fowl

Question 13

The intermediate host of Draschia megastomu is:

Answer 13

Musca domestica.

Question 14

The swelling of limbs typical of elephantiasis is due to:

Answer 14

Lymphatic circulation being blocked by filarial worms

Question 15

The following nematodes inhabit the respiratory system except :

Answer 15

Physaloptera pracputialis

Question 16

The Guinea-worm is

Answer 16

None of the above.

Question 17

Foals become infected with Parascaris equorum:

Answer 17

when they ingest larvated eggs from a contaminated environment.

Question 18

Summer sores are equine dermal lesions caused by:

Answer 18

Adults of Habronema muscae.

Question 19

Intermediate hosts of Trichostrongylus axei are:

Answer 19

None of the above.

Question 20

The scientific name of canine heart-worm is:

Answer 20

Dirofilaria immitis.

Question 21

The whip-worm of ruminants is:

Answer 21

Trichuris globulosa

Question 22

The following nematodes are parasites of poultry except:

Answer 22

Strongvloides ransomi.

Question 23

Subcutaneous nodules that affect beef marketing are caused by:

Answer 23

Oesophagostomum columbianum_

Question 24

For-rot disease in sheep is predisposed by infection with:

Answer 24

All the above.

Question 25

The seatworrn of man is:

Answer 25

Enterobius vermicularis.

Question 26

Which of the following nematodes is of zoonotic importance:

Answer 26

All the above.

Question 27

Which of the following routes of transmission does not occur of Toxocara caff,

Answer 27

Prenatal transmission

Question 28

This parasite is unusual among the trichostrongyles in that it not only infects ruminants. but also infects many other host species including horses and pig it is one of the few parasites of potential concern in a mixed-species grazing situation

Answer 28

Trichostrongylus axei.

Question 29

Elephemiasis of the infected tissues is a disease entity with;

Answer 29

Loa loa

Question 30

the__________ is used in nematode reproduction for baseball glove:

Answer 30

bursa

Question 31

The nematodes are called:

Answer 31

Round worms.

Question 32

The hook worm of sheep and goats is:

Answer 32

Gaigeria pachyscelis.

Question 33

_________nematodes lay eggs with larvae in them,

Answer 33

Ovoviviparous

Question 34

lite predilection site of adult Spirocerca lupi is:

Answer 34

The wall of oesophagus, stomach and aorta,

Question 35

Which genus of nematodes has species that live freely in the abdominal cavity ?

Answer 35

Setaria

Question 36

Four examples of parasitic nematodes are hookworms, filarial worms, _____ and _________

Answer 36

pinworms, trichina worms.

Question 37

Which nematode has an intermediate host of an earthworm?

Answer 37

Merasfrongylus elongatus.

Question 38

The intermediate hosts of Dipetalonema evansi is:

Answer 38

Aedes deiritms.

Question 39

Trichinella spiralis is a parasite of:

Answer 39

all of the above