Tag: harmful microorganisms

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Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Aedes mosquito is a vector for

  1. Plague

  2. Malaria

  3. Filaria

  4. Encephalitis and Dengue
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Aedes is a genus of mosquitoes originally found in tropical and subtropical zones but now found on all continents except Antarctica. Some species of this genus (like Aedes albopictus and Aedes aegypti) transmit serious diseases, including dengue fever, yellow fever, eastern equine encephalitis and chikungunya. So, the correct answer is option D.

Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Dengue fever is spread by

  1. Anopheles

  2. Aedes

  3. Culex

  4. Musca.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Dengue fever is spread through the bite of the female mosquito (Aedes aegypti). 
  • The mosquito becomes infected when it takes the blood of a person infected with the virus. After about one week, the mosquito can then transmit the virus while biting a healthy person.
  • Hence Dengue fever is spread by Aedes.
  • So, the correct answer is 'Aedes'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Aedes is vector of

  1. Plague

  2. Malaria

  3. Filaria

  4. Encephalitis and Dengue.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A disease vector is an agent who carries and transmits an infectious pathogen into another living organism.
  • Aedes mosquito is known to transmit dengue virus, yellow fever virus, chikungunya virus, Zika virus and Encephalitis(inflammation of the brain).
  • It can be recognized by white markings on its legs and a marking in the form of a lyre on the upper surface of its thorax.
  • Hence Aedes is a vector of 'Encephalitis and Dengue'.
  • So, the correct answer is 'Encephalitis and Dengue'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Aedes is the carrier of

  1. Dengue fever

  2. Relapsing fever

  3. Malaria

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The dengue virus is transmitted to humans via the bite of an infected mosquito. Only a few mosquito species are vectors for the dengue virus. The dengue virus is carried and spread by mosquitoes in the genus Aedes, which includes a number of mosquito species. Of these species, the primary vector of the dengue virus is the species Aedes aegypti.

So, the correct answer is 'Dengue fever'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Aedes aegypti is vector of

  1. Yellow fever

  2. Dengue fever

  3. Both A and B

  4. Japanese encephalitis.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • A disease vector is an agent who carries and transmits an infectious pathogen into another living organism.
  • Aedes aegypti is known to transmit dengue virus, yellow fever virus, chikungunya virus, and Zika virus.
  • It can be recognized by white markings on its legs and a marking in the form of a lyre on the upper surface of its thorax.
  • Hence Aedes aegypti is a vector of Yellow fever and Dengue fever.
  • So, the correct is 'Both A and B'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Aedes aegypti is a vector for

  1. Yellow fever

  2. Dengue fever

  3. Japanese encephalitis

  4. Both A and B.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A disease vector is an agent who carries and transmits an infectious pathogen into another living organism.
  • Aedes aegypti is known to transmit dengue virus, yellow fever virus, chikungunya virus, and Zika virus.
  • It can be recognized by white markings on its legs and a marking in the form of a lyre on the upper surface of its thorax.
  • Hence Aedes aegypti is a vector for yellow fever and Dengue fever.
  • So, the correct answer is 'Both A and B'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Arbovirus (transmitted by arthropods) causes

  1. Malaria

  2. Dengue

  3. Filariasis

  4. Amoebiasis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Arbovirus refers to any viruses that are transmitted by arthropod vectors. Arboviruses can affect both animals, including humans, and plants. 

  • Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Malaria is a mosquito-borne infectious disease caused by protozoa i.e., Plasmodium species. Filariasis is a parasitic disease caused by an infection with roundworms. Amoebiasis is a protozoal infection caused by Entamoeba histolytica.

  • Hence, Arbovirus caused dengue fever.

  • So, the correct answer is 'Dengue'.

Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Casual organism of dengue is 

  1. Arbovirus

  2. Wuchereria

  3. Anopheles

  4. Culex
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Dengue fever is a mosquito-borne tropical disease caused by the dengue virus.Dengue is spread by several species of a mosquito of the  Aedes Type, principally A.aegypti.
  • .Symptoms typically begin three to fourteen days after infection.[2] This may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin rash
  • Arbovirus is an informal name used to refer to any viruses that are transmitted by arthropod vectors. As dengue is transmitted by an arthropod vector(mosquito) its causative organism is called arbovirus.
  • So, the correct answer is 'Arbovirus'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

Which of the following is the causative organism of influenza?

  1. Rhinovirus

  2. Myxovirus influenzae

  3. Streptococcus

  4. Salmonella
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Influenza, commonly called 'the flu' is an illness caused by RNA viruses of the family Orthomyxoviridae. For example, Myxovirus influenzae.
  • The most common symptoms include high fever, runny nose, sore throat, muscle pains, headache, coughing, sneezing, and feeling tired.
  • Hence Myxovirus influenzae is the causative organism of influenza.
  • So, the correct answer is 'Myxovirus influenzae'.
Multiple choice classification of microbes living world and classification of microbes useful and harmful microbes harmful microorganisms biology

............. is an infection of the human beings caused by a virus.

  1. Typhoid

  2. Influenza

  3. Dysentry

  4. Cholera
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Influenza is a viral disease. Influenza virus is of three types, viz; type A, type B and type C. This virus spread even is short distances causing flu-like conditions, fever, runny nose, headache, muscle pain, coughing, etc. 
  • Typhoid is a disease caused by the bacteria named Salmonella typhi. 
  • Dysentery is a gastroenteritis disorder causing diarrhoea. This disorder can be caused by bacteria, viruses, protozoans or parasites. 
  • Cholera is caused by the bacteria named Vibrio cholerae. 
    • So, the correct answer is option B.