Biology Multiple Choice Questions on “Parasitic and Protozoan Diseases in Animals”.
1. Which of the following is not an endoparasite?
a) Ticks
b) Tapeworm
c) Liver fluke
d) Roundworm
Answer: a
Clarification: Endoparasites live inside the body of animals. They also generally feed over animal fluids and semi-digested food in the alimentary canal. For example, Tapeworm, Liver fluke and Roundworm.
2. Where does liver fluke lives in sheep?
a) Brain
b) Kidney
c) Bile ducts
d) Pancreas
Answer: c
Clarification: Liver fluke causes liver rot or fascioliasis in sheep. The parasite lives in bile ducts. Liver fluke also passes a part of its life cycle in snails. Eradication of snails can help in the control of the disease.
3. Which of the following is not caused by liver fluke in animals?
a) Anaemia
b) Diarrhoea
c) Eosinophilia
d) AIDS
Answer: d
Clarification: Liver fluke causes inflammation of bile ducts, anaemia, diarrhoea, eosinophilia and liver rot which may lead to the death of the animal. Anthelminthic drugs like emetine hydrochloride and hexachloroethane are useful in treatment of the disease.
4. Ectoparasites live inside the body of the animal.
a) True
b) False
Answer: b
Clarification: Parasitic animals can live inside as well as outside of the body of the host. Ectoparasites live on the skin feeding over dead skin and animal fluids. For example, ticks.
5. Which of the following is a common roundworm which infects domestic animals?
a) Rhabditis
b) Ascaris
c) Enterobius
d) Ancylostoma
Answer: b
Clarification: Ascaris is a common roundworm which infects both domestic animals as well as human beings. The disease caused by it is ascariasis. The source of infection is contaminated food.
6. Where do the embryonated eggs of Ascaris hatch out in the animal?
a) Heart
b) Brain
c) Kidney
d) Intestine
Answer: d
Clarification: The embryonated eggs of Ascaris hatch out in the intestine. The larvae pass into hepatic portal vein, spleen, liver, heart, pulmonary arteries, lungs, trachea, larynx, pharynx, oesophagus and intestine again where they develop into adult male and female worms.
7. Which of the following is not caused by the movement of larvae through the body of animal?
a) Diarrhoea
b) Anaemia
c) Typhoid
d) Constipation
Answer: c
Clarification: During the movement of the larvae through the body of the animal, Ascaris damages various body parts and causes permanent injury. In the intestine, adults rob the animal of nutrition causing constipation, diarrhoea, weakness and anaemia. They may at times block the intestine which causes the death of the animal.
8. How does the fresh infection of Ascaris occur in various animals?
a) Contaminated feed
b) Contaminated clothes
c) Contact with infected animals
d) Eating healthy food
Answer: a
Clarification: Fresh infection of Ascaris occurs due to feed or grass or water contaminated with the faecal matter of infected animals. The infected animal can be treated by giving drugs like piperax, piperazine adipate, wormex, alcopar, chenopodium oil, etc.
9. Coccidiosis is an infection of _______
a) Brain
b) Intestine
c) Eyes
d) Tongue