Tag: zoology

Questions Related to zoology

Which of the following options correctly identifies the effect of sympathetic and parasympathetic neural system on given features or organs?

zoology nervous system nervous systems involved in emotions types of nervous system components of nervous system

  1. Feature/organ - Salivary glands

    Sympathetic neural system - Stimulates secretion
    Parasympathetic neural system - Inhibits secretion

  2. Feature/organ - Pupil of the eye

    Sympathetic neural system - Dilates
    Parasympathetic neural system - Constricts

  3. Feature/organ - Heart rate

    Sympathetic neural system - Decreases
    Parasympathetic neural system - Increases

  4. Feature/organ - Intestinal Peristalsis

    Sympathetic neural system - Stimulates
    Parasympathetic neural system - Inhibits

Show answer
Correct Option: B
Explanation:
The correct matches are;

1. Feature/organ - Salivary glands
Sympathetic neural system - Inhibits secretion
Parasympathetic neural system - Stimulates secretion

2. Feature/organ - Pupil of the eye
Sympathetic neural system - Dilates
Parasympathetic neural system - Constricts

3. Feature/organ - Heart rate
Sympathetic neural system - Increases
Parasympathetic neural system - Decreases

4. Feature/organ - Intestinal Peristalsis
Sympathetic neural system - Inhibits
Parasympathetic neural system - Stimulates

So the correct option is 'B'.

Given below is a list of few sexually transmitted diseases. Identify the diseases caused by bacteria among these.
(i) Gonorrhoea,  (ii) Giardiasis,  (iii) Trichomoniasis,  (iv) Chancroid,  (v) Syphilis

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

  1. (i) and (ii)

  2. (i), (iv) and (v)

  3. (iii) and (v)

  4. (ii), (iii) and (iv)

Show answer
Correct Option: B
Explanation:

Gonorrhoea is caused by Neisseria gonorrhoeae. Chancroid, is caused by Haemophilus ducreyi. Syphilis is caused by Treponema pallidum. Giardiasis and trichomoniasis are protozoan diseases.

Malaria Day is

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

  1. 25th April

  2. 15th August

  3. 5th June

  4. 6th January

Show answer
Correct Option: A
Explanation:
World Malaria Day is an international observance commemorated every year on 25 April and recognizes global efforts to control malaria.

So, the correct answer is '25th April'.

Cerebral malaria is due to

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

  1. Plasmodium falciparum

  2. Plasmodium vivax

  3. Plasmodium malariae

  4. Plasmodium ovale

Show answer
Correct Option: A
Explanation:
Cerebral malaria is a diffuse encephalopathy (Encephalopathy means brain disease, disorder, or damage) associated with seizures and status epilepticus which can occur in up to one-third of patients with severe malaria, particularly that caused by Plasmodium falciparum.

So, the correct answer is 'Plasmodium falciparum'.

Leucorrhoea is caused by

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

  1. Leishmania donovani

  2. Trichomonas vaginalis

  3. Lophomonas blattarum

  4. Trichonympha campanula

Show answer
Correct Option: B
Explanation:
Leukorrhea is also a sign of vaginitis (inflammation of the vagina), which is often caused by infection with the fungus Candida albicans or by infection with the protozoan parasite Trichomonas vaginalis. Infection with these organisms may give rise to an irritating discharge that is often quite resistant to treatment. Common symptoms of this disease are burning sensation, itching and discharge of frothy substance, thick, white or yellow mucous.

So, the correct answer is ''Trichomonas vaginalis.

Meningo-encephalitis is caused by

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

  1. Plasmodium

  2. Entamoeba

  3. Trichomonas

  4. Trypanosoma

Show answer
Correct Option: D
Explanation:
  • Meningoencephalitis is the Inflammation of the brain and surrounding tissues, usually caused by infection.
  • Signs of meningoencephalitis include unusual behavior, personality changes, and thinking problems and Symptoms may include headache, fever, pain in neck movement, light sensitivity, and seizure.
  • Causative organisms include protozoans, viral and bacterial pathogens.
  • The protozoal pathogen responsible for Meningoencephalitis is Trypanosoma.
  • Hence Meningoencephalitis is caused by Trypanosoma.
  • So, the correct answer is 'Trypanosoma'.

Amoebiasis in prevented by

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

  1. Eating balanced food

  2. Eating plenty of fruits

  3. Drinking boiled water

  4. Using mosquito nets

Show answer
Correct Option: C
Explanation:
Amebiasis is a parasitic infection of the intestines caused by the protozoan Entamoeba histolytica, or E. histolytica. The symptoms of amebiasis include loose stool, abdominal cramping, and stomach pain. However, most people with amebiasis won’t experience significant symptoms. E. histolytica is a single-celled protozoan that usually enters the human body when a person ingests cysts through food or water.

If you’re traveling to places where the infection is common, follow this regimen when preparing and eating food:
  • Thoroughly wash fruits and vegetables before eating.
  • If you must drink water, boil it or treat it with iodine.

So, the correct answer is 'Drinking boiled water'.

American trypanosomiasis is also called as

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

  1. Chagas disease

  2. Dumdum fever

  3. Espundia

  4. Both B and C

Show answer
Correct Option: A
Explanation:
Chagas disease, also known as American trypanosomiasis, is a tropical parasitic disease caused by the protist Trypanosoma cruzi. It is spread mostly by insects known as Triatominae, or "kissing bugs".

So, the correct answer is 'Chagas disease'.

Entamoeba histolytica infection occurs through

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

  1. Contaminated water and food

  2. Sweat

  3. Bird droppings

  4. Mosquito bites

Show answer
Correct Option: A
Explanation:
Entamoeba histolytica is an ameba that feeds on cells in the human colon. Infection by Entamoeba histolytica occurs by ingestion of mature cysts in fecally contaminated food, water, or hands.

So, the correct answer is 'Contaminated water and food'.

Trypanosoma/Trypanosomiasis is spread by

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

  1. Housefly

  2. Tse-tse fly

  3. Sand fly

  4. Culex

Show answer
Correct Option: B
Explanation:
  • African trypanosomiasis, also known as sleeping sickness is caused by a protozoan parasite called Trypanosoma brucei.
  • Trypanosomiasis is spread by spread by the bite of an infected tsetse fly and is most common in rural areas.
  • Hence Trypanosoma/Trypanosomiasis is spread by Tse-tse fly.
  • So, the correct answer is 'Tse-tse fly'.