Tag: zoology

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Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Causative agent of amoebiasis is

  1. Amoeba proteus

  2. Entamoeba histolytica

  3. Entamoeba coli

  4. Entamoeba gingivalis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Amebiasis is a disease caused by infection with a parasitic amoeba that, when symptomatic, can cause dysentery and invasive extraintestinal problems. The cause of amebiasis is mainly the protozoan parasite Entamoeba histolytica.

So, the correct answer is 'Entamoeba histolytica'.
Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Which of the following is a communicable disease?

  1. Cancer

  2. Malaria

  3. Heart attack

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

Any disease that can be transferred from infected person to healthy is called as communicable disease such as malaria because malaria is caused by Plasmodium and transferred from infected to healthy by the help of vector i.e., mosquitoes. Whereas cancer (caused by abnormal cell growth), Heart attack (caused by abnormal metabolism) and diabetes (caused by abnormal secretion of hormone) are the non-communicable disease

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

In patients suffering from sleeping sickness, the critical symptom which may lead to death appears when the parasite invades

  1. Spleen

  2. Heart

  3. Cerebrospinal fluid

  4. Vitreous humor
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sleeping sickness is curable if treatment is given quickly, however, if left untreated the disease is fatal. Once in the second stage of the disease, when the parasite has crossed the blood-brain barrier, treatment becomes much more aggressive with more toxic drugs needed to kill the parasite. So, the correct option is "C" (Cerebrospinal fluid).

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Which of the following is a protozoan disease?

  1. Malaria

  2. Typhoid

  3. AIDS

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

Protozoan diseases are caused by the organisms belonging to the Kingdom Protista, called Protozoa.

A. Malaria is caused by Plasmodium which is protozoa. It is a protozoan disease.
B. Typhoid is caused by bacteria Salmonella typhi.
C. AIDS is caused by the virus HIV.
D. Cholera is caused by bacteria Vibrio cholerae.
Hence, the correct answer is 'Malaria'

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Incorrect about Entamoeba histolytica or amoebiasis is:
(a) Parasite of small intestine
(b) Causes dysentery
(c) Houseflies are mechanical carriers
(d) Symptoms include constipation, abdominal pain and cramp.

  1. A

  2. C

  3. A, C

  4. All are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Entamoeba histolytica is a parasite of the large intestine, not the small intestine. Therefore, statement (a) is incorrect.

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Amoebic dysentery is due to ............... infection

  1. Entamoeba histolystica

  2. Entamoeba gingivalis

  3. Entamoeba hartmanni

  4. Both A and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Entamoeba histolytica is an endoparasile lives in the large intestine of man. It lives in tissues of caecum and colon of large intestine. The pathogenic form cause amoebiasis and hepatic amoebiasis. Thus, the correct answer is option A.

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Sleeping sickness is caused by

  1. Trypanosoma

  2. Leishmania

  3. Entamoeba

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

Sleeping sickness is caused by two germs (protozoa), Trypanosoma brucei rhodesiense and Trypanosomoa brucei gambiense. The more severe form of the illness is caused by T. brucei rhodesiense. Tsetse flies carry the infection. Thus, the correct answer is option A.

Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Trypanosoma causes 

  1. Dysentery

  2. Sleeping sickness

  3. Plague

  4. Malaria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Human trypanosomiasis, also known as sleeping sickness, is a vector-borne parasitic disease. It is caused by infection with protozoan parasites belonging to the genus Trypanosoma.The common symptoms are fever, headaches, itchiness, and joint pains
So, the correct answer is 'Sleeping sickness'
Multiple choice zoology some common diseases diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Other than intestine, Entamoeba histolytica often gets lodged in 

  1. Brain

  2. Liver

  3. Lungs and Testes

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

Entamoeba histolytica is a microscopic endoparasite of man and is commonly found in the lumen of the upper part of the large intestine, that is the colon. In chronic cases, they get into blood circulation and migrate to the spleen, liver, lungs, gonads, and brain, where they produce secondary complications.

Thus, the correct answer is option D.