Biology · General Awareness

Disease Vectors and Pathogens

820 Questions

Disease vectors and pathogens examine how organisms like Plasmodium and Leishmania transmit infections. Test items require matching vectors to specific diseases. Studying these life cycles is essential for scoring well.

Plasmodium infective stagesDisease transmission modesDisease vectors and fleasIntracellular parasitesElephantiasis causes

Disease Vectors and Pathogens Questions

Multiple choice chemistry water too little to waste pollution of water water pollution planet earth

Which of the following disease increase due to greenhouse effect?

  1. Malaria

  2. Dengue

  3. Yellow Fever

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The rise in the average temperature of earth has been described as global warming which is mainly attributed to the increasing phenomenon of the greenhouse effect. It is believed that global warming can have several harmful effects on human health, both directly and indirectly. Since malaria is greatly influenced by climatic conditions because of its direct relationship with the mosquito population, it is widely assumed that its incidence is likely to increase in a future warmer world.

As global warming continues, malaria is set to spread in locations where previously it was limited, due to cooler climate. On the other hand, several theories have been put forward which are quite contrary to this prediction. There are multiple other factors which are accountable for the recent upsurge of malaria: for example drug resistance, mosquito control programs, public health facilities, and living standards. Due to the rising global temperature, more areas of the world will become favourable for the survival of tropical insects like mosquitoes. This could lead to the spread of these insects towards more northern and southern hemispheres and to higher altitudes. Some species of mosquito act as disease vectors and are responsible for the spread of illnesses like malaria, Dengue fever, and Yellow fever. Hence, global warming can increase the incidence of these diseases

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

An infectious disease which is vector borne and is transmited to vertebrates by another animal is 

  1. Polio

  2. Mumps

  3. Cholera

  4. Malaria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rabies is caused by rabies virus. It is caused due to an animal bite which readily transfers the pathogens to the blood of the infected. Saliva from an infected animal can also transmit rabies if the saliva comes into contact with the mouth, nose, or eyes. Infected vertebrates like birds, rodents, other larger animals mainly dogs are the most common animal involved. The rabies virus travels to the brain by following the peripheral nerves and affect the neurological junctions.

Therefore, the correct answer is option D.

Multiple choice zoology our health harmful microorganism for humans microbes and diseases categories of diseases

Which is the most fast spreading disease?

  1. Malaria

  2. Plague

  3. Poliomyelitis

  4. Leprosy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Plague is mainly caused by bacteria Yersinia pestis which is a  chronic bacterial infection. Rodents, are the carrier of the disease. It is spread by their fleas. People can get plague when they are bitten by a flea that carries the plague bacteria from an infected rodent. Plague lung infection is called pneumonic plague. It is spread from person-to-person. When someone with pneumonic plague coughs, tiny droplets carrying the bacteria move through the air. Anyone who breathes in these particles may catch the disease. An epidemic can be started this way.
Therefore, the correct answer is option B.
Multiple choice

Which of the following is NOT a common type of protozoan infection:

  1. malaria

  2. amoebiasis

  3. giardiasis

  4. cryptosporidiosis

  5. toxoplasmosis
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Toxoplasmosis is a parasitic infection, not a protozoan infection.

Multiple choice

What is the primary vector for the transmission of Lyme disease to humans?

  1. Mosquitoes

  2. Ticks

  3. Fleas

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

Lyme disease is primarily transmitted to humans through the bite of infected ticks, particularly Ixodes scapularis and Ixodes pacificus in North America.

Multiple choice

Which disease is caused by a protozoan parasite and affects the blood of birds, leading to avian malaria?

  1. Plasmodium falciparum

  2. Plasmodium vivax

  3. Plasmodium malariae

  4. Plasmodium gallinaceum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Avian malaria is caused by a protozoan parasite Plasmodium gallinaceum and is transmitted by mosquitoes. It affects the blood of birds, leading to anemia, weakness, and potentially death.

Multiple choice

Which of the following is NOT a type of malaria parasite?

  1. Plasmodium falciparum

  2. Plasmodium vivax

  3. Plasmodium ovale

  4. Plasmodium malariae
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plasmodium malariae is not a type of malaria parasite. Plasmodium falciparum, Plasmodium vivax, and Plasmodium ovale are the three main types of malaria parasites that infect humans.

Multiple choice

What is the name of the disease caused by the bite of an infected female Anopheles mosquito?

  1. Malaria

  2. Dengue fever

  3. Yellow fever

  4. Chikungunya
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Malaria is a disease caused by the bite of an infected female Anopheles mosquito.

Multiple choice

Which of the following is NOT a vector-borne disease?

  1. Malaria

  2. Dengue fever

  3. Yellow fever

  4. Influenza
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Influenza is not a vector-borne disease because it is spread through direct contact with respiratory droplets or by touching surfaces contaminated with the virus.

Multiple choice

What is the term for the person or animal that harbors and transmits an infectious agent to another person or animal?

  1. Reservoir

  2. Vector

  3. Host

  4. Carrier
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A reservoir is the person or animal that harbors and transmits an infectious agent to another person or animal.

Multiple choice

What is the term for the person or animal that is infected with an infectious agent but does not show any symptoms of the disease?

  1. Carrier

  2. Host

  3. Vector

  4. Reservoir
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A carrier is a person or animal that is infected with an infectious agent but does not show any symptoms of the disease.

Multiple choice

Which type of microorganism is responsible for malaria?

  1. Bacteria

  2. Viruses

  3. Fungi

  4. Protists
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Malaria is caused by a protist, specifically a protozoan called Plasmodium.