Q. What is the main symptom of the plant disease caused by the cucumber mosaic virus?
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A.
Yellowing of leaves
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B.
Wilting
-
C.
Stunted growth
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D.
Mosaic patterns on leaves
Solution
The cucumber mosaic virus causes characteristic mosaic patterns on the leaves of infected plants.
Correct Answer:
D
— Mosaic patterns on leaves
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Q. What is the main vector for the transmission of the Zika virus?
-
A.
Ticks
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B.
Fleas
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C.
Mosquitoes
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D.
Lice
Solution
The Zika virus is primarily transmitted to humans through the bite of infected Aedes mosquitoes.
Correct Answer:
C
— Mosquitoes
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Q. What is the primary method of preventing the spread of the avian influenza virus in poultry?
-
A.
Vaccination
-
B.
Quarantine
-
C.
Antiviral medications
-
D.
Genetic modification
Solution
Vaccination is a primary method used to prevent the spread of avian influenza in poultry populations.
Correct Answer:
A
— Vaccination
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Q. What is the primary mode of transmission for the rabies virus?
-
A.
Airborne droplets
-
B.
Direct contact with infected saliva
-
C.
Contaminated water
-
D.
Insect bites
Solution
Rabies virus is primarily transmitted through direct contact with the saliva of an infected animal, usually via bites.
Correct Answer:
B
— Direct contact with infected saliva
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Q. What type of virus is the tobacco mosaic virus?
-
A.
Bacteriophage
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B.
RNA virus
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C.
DNA virus
-
D.
Retrovirus
Solution
The tobacco mosaic virus is an RNA virus that infects plants, particularly tobacco and other related species.
Correct Answer:
B
— RNA virus
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Q. Which animal is a common reservoir for the West Nile virus?
-
A.
Cats
-
B.
Dogs
-
C.
Birds
-
D.
Bats
Solution
Birds are the primary reservoir for the West Nile virus, which is transmitted to humans through mosquito bites.
Correct Answer:
C
— Birds
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Q. Which of the following is a characteristic of the norovirus?
-
A.
Causes respiratory illness
-
B.
Primarily affects the gastrointestinal tract
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C.
Transmitted by mosquitoes
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D.
Only affects animals
Solution
Norovirus primarily affects the gastrointestinal tract, leading to symptoms such as vomiting and diarrhea.
Correct Answer:
B
— Primarily affects the gastrointestinal tract
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Q. Which of the following viruses is known to cause severe acute respiratory syndrome (SARS)?
-
A.
HIV
-
B.
SARS-CoV
-
C.
Influenza virus
-
D.
Ebola virus
Solution
SARS is caused by the SARS coronavirus (SARS-CoV), which emerged in the early 2000s.
Correct Answer:
B
— SARS-CoV
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Q. Which virus is known to cause the disease known as 'foot-and-mouth disease' in livestock?
-
A.
Avian influenza virus
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B.
Foot-and-mouth disease virus
-
C.
Bovine viral diarrhea virus
-
D.
Porcine reproductive and respiratory syndrome virus
Solution
Foot-and-mouth disease is caused by the foot-and-mouth disease virus, which affects cloven-hoofed animals.
Correct Answer:
B
— Foot-and-mouth disease virus
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Q. Which virus is responsible for the disease known as 'African swine fever'?
-
A.
Porcine parvovirus
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B.
African swine fever virus
-
C.
Classical swine fever virus
-
D.
Porcine reproductive and respiratory syndrome virus
Solution
African swine fever is caused by the African swine fever virus, which affects domestic and wild pigs.
Correct Answer:
B
— African swine fever virus
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