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Human Health and Disease MCQs
Class XII Biology
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NCERT Based
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NEET Practice
📘 Concept Based
📝 Exam Level
🤖 AI Explanations
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446 questions in this chapter
Question 11 of 446
📘 CLASS XII
Sustained high fever (39° to 40°C), weakness, stomach pain, and constipation are common symptoms of:
These symptoms are listed as common symptoms of typhoid fever.
Question 12 of 446
📘 CLASS XII
The diagnostic test used to confirm typhoid fever is:
Typhoid fever could be confirmed by Widal test.
Question 13 of 446
📘 CLASS XII
The pathogens responsible for pneumonia, such as Streptococcus pneumoniae and Haemophilus influenzae, infect the:
These bacteria infect the alveoli (air filled sacs) of the lungs.
Question 14 of 446
📘 CLASS XII
In severe cases of pneumonia, a visible symptom related to oxygen deprivation is:
In severe cases of pneumonia, the lips and finger nails may turn gray to bluish in colour.
Question 15 of 446
📘 CLASS XII
Common cold is caused by which group of viruses?
Rhino viruses cause one of the most infectious human ailments—the common cold.
Question 16 of 446
📘 CLASS XII
Unlike pneumonia, the common cold viruses infect the nose and respiratory passage but explicitly do NOT infect the:
Rhino viruses infect the nose and respiratory passage but not the lungs.
Question 17 of 446
📘 CLASS XII
Transmission of the common cold often occurs through contaminated objects such as:
The infection is transmitted through contaminated objects such as pens, books, cups, doorknobs, computer keyboard or mouse, etc..
Question 18 of 446
📘 CLASS XII
The protozoan genus responsible for causing malaria is:
Plasmodium, a tiny protozoan, is responsible for malaria.
Question 19 of 446
📘 CLASS XII
Which species of Plasmodium causes malignant malaria, which is the most serious and potentially fatal type?
Malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Question 20 of 446
📘 CLASS XII
In the human body, Plasmodium enters as the infectious form known as:
Plasmodium enters the human body as sporozoites (infectious form) through the bite of infected female Anopheles mosquito.
