Human Health and Diseases Practice Test

12th Standard Zoology — Human Health and Diseases: Online Practice Test

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Malaria caused by Plasmodium is transmitted through

A.Air B.Contact C.Fleas on food D.Mosquito bites

A 30 year old woman has bleedy diarrhoea for the past 14 hours, which one of the following organisms is likely to cause this illness?

A.Streptococcus pyogens B.Clostridium difficile C.Shigella dysenteriae D.Salmonella enteritidis

Which of the following disease is spread through droplet nuclei?

A.Tularemia B.Listeriosis C.Chicken pox D.Mumps

Exo-erythrocytic schizogony of Plasmodium takes place in -------

A.RBC B.Leucocytes C.Stomach D.Liver

The sporozoites of Plasmodium vivax are formed from ------------

A.Gametocytes B.Sporoblasts C.Oocysts D.Spores

Poliomyelitis which causes infantile paralysis enters the body through.........

A.Skin B.Mouth and nose C.Ears D.Eyes

Amphetamines are stimulants of the CNS, whereas barbiturates are ----

A.CNS stimulant B.both a and b C.hallucinogenic D.CNS depressants

Marijuana is extracted from

A.Dried leaves and flowers of hemp plant B.Ergot fungus C.Roots of hemp plant D.Cocoa plant

Choose the correctly match pair.

A.Amphetamines - Stimulant B.LSD - Narcotic C.Heroin - Psychotropic D.Benzodiazepine - Pain killer

Q10

The Athlete's foot disease in human is caused by-------

A.Bacteria B.Fungi C.Virus D.Protozoan

Q11

Cirrhosis of liver is caused by chronic intake of ------

A.Opium B.Alcohol C.Tobacco D.Cocaine

Q12

The sporozoite of the malarial parasite is present in ----

A.saliva of infected female Anopheles mosquito. B.RBC of human suffering from malaria. C.Spleen of infected humans. D.Gut of female Anopheles mosquito.

Q13

Haemozoin is

A.A precursor of haemoglobin. B.A toxin from Streptococcus. C.A toxin from Plasmodium species. D.A toxin from Haemophilus species.

Q14

The drug synthesised from Datura is

A.Hallucinogen B.Depressant C.Stimulant D.Pain killer

Q15

Match the pathogens with respective diseases caused by them and select the correct match using the codes given below. A. Leishmania donavani - i. Amoebiasis B. Wuchereria bancrofti - ii. Kala - azar C. Trypanosoma gambiense - iii. Sleeping sickness D. Entamoeba histolytica - iv. Filariasis

A.A-ii, B-iv, C-iii, D-i B.A-ii, B-iv, C-i, D-iii C.A-iii, B-i, C-ii, D-iv D.A-i, B-iv, C-iii, D-ii

Q16

Which diagnostic test is commonly used to confirm a clinical diagnosis of typhoid fever?

A.ELISA B.Western blot C.Widal test D.PCR

Q17

In which specific part of the human body does the protozoan parasite Entamoeba histolytica primarily reside and feed on mucus and bacteria?

A.Small intestine B.Stomach C.Large intestine D.Liver

Q18

Tetanus, commonly known as lock jaw, is a bacterial disease characterized by painful muscle spasms. Which of the following is the causative pathogen of tetanus?

A.Streptococcus pneumoniae B.Clostridium tetani C.Salmonella typhi D.Mycobacterium tuberculosis

Q19

Why is it exceptionally difficult to develop a universal vaccine against the common cold?

A.The pathogen is a large multicellular helminth. B.It is caused by over 150 different strains of Rhino viruses whose RNA genome constantly mutates. C.The virus remains dormant in the bone marrow for decades. D.It is caused by anaerobic spore-forming bacteria that resist antibodies.

Q20

During the erythrocytic stage of the Plasmodium life cycle in humans, yellowish-brown pigmented granules appear in the large schizont. What are these granules called?

A.Haemozoin granules B.Nissl's granules C.Schuffner's granules D.Acidophilic granules

Q21

Which mosquito species acts as the primary vector for transmitting both Dengue fever and Chikungunya to humans?

A.Anopheles stephensi B.Culex pipiens C.Aedes aegypti D.Mansonia uniformis

Q22

What is the infective stage of the protozoan parasite Entamoeba histolytica that penetrates the intestinal wall of the host?

A.Cystic stage B.Sporozoite C.Trophozoite D.Merozoite

Q23

Ascaris lumbricoides, commonly known as the roundworm, is a parasite of the human intestine. How is this parasite classified based on its host requirements?

A.Digenic parasite B.Monogenic parasite C.Polygenic parasite D.Ectoparasite

Q24

Cannabinoids are a group of chemicals obtained from the hemp plant Cannabis sativa. Which neurotransmitter system do cannabinoids directly interfere with in the central nervous system?

A.Acetylcholine B.Serotonin C.Dopamine D.Gamma-aminobutyric acid (GABA)

Q25

Morphine is a widely abused narcotic drug extracted from the opium plant. What is its legitimate medical application?

A.Central nervous system stimulant B.Pain killer used during surgery C.Vaccine adjuvant for viral diseases D.Antidote for heavy metal poisoning

Q26

A sedentary lifestyle can cause a deficiency of which vitamin, leading to fatigue, tiredness, bone loss, and muscle pain?

A.Vitamin A B.Vitamin C C.Vitamin D D.Vitamin K

Q27

Irritable Bowel Syndrome (IBS) is a common gastrointestinal disorder characterized by stomach discomfort and abnormal bowel movements. What is identified as its primary cause?

A.Bacterial infection by Vibrio cholerae B.High-caloric junk food intake C.Stress and associated illness D.Heavy consumption of alcohol

Q28

Swine flu, which was first recognized in the 1919 pandemic and still circulates as a seasonal flu virus, is caused by which viral strain?

A.H5N1 B.H1N1 C.DENV-1 D.Nipah virus

Q29

Which of the following statements is correct regarding the Nipah virus?

A.It is a protozoan disease transmitted by houseflies. B.It is a zoonotic virus that can cause acute respiratory illness and fatal encephalitis. C.It primarily infects the human large intestine, causing severe dysentery. D.It is easily treated and cured with broad-spectrum antibiotics.

Q30

Pneumonia is an infectious disease of the lungs caused by Streptococcus pneumoniae. Which of the following is a classic symptom of pneumonia?

A.Thick mucopurulant nasal discharge B.Rigidity of jaw muscles and rapid heart rate C.Fever, cough, painful breathing, and brown sputum D.Reddish rashes on the skin, neck, and ears

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About this Human Health and Diseases test

This free online practice test covers Human Health and Diseases from the 12th Standard Zoology (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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