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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 291 of 446
📘 CLASS XII
Symptoms of the common cold, such as nasal congestion and sore throat, usually last for ____ days.
The common cold symptoms usually last for 3-7 days.
Question 292 of 446
📘 CLASS XII
After entering the human body, the Plasmodium parasites initially multiply within the ____ cells.
The parasites initially multiply within the liver cells and then attack the red blood cells.
Question 293 of 446
📘 CLASS XII
In the mosquito host, Plasmodium parasites multiply to form sporozoites that are stored in the mosquito’s ____ glands.
The parasites multiply to form sporozoites that are stored in their salivary glands.
Question 294 of 446
📘 CLASS XII
Symptoms of amoebiasis include constipation, abdominal pain, and stools with excess mucous and ____ clots.
Symptoms of amoebiasis include stools with excess mucous and blood clots.
Question 295 of 446
📘 CLASS XII
In filariasis, the ____ organs are also often affected, resulting in gross deformities.
The genital organs are also often affected (in filariasis), resulting in gross deformities.
Question 296 of 446
📘 CLASS XII
The main symptoms of ringworms are the appearance of dry, scaly lesions on various parts of the body such as the skin, nails and ____.
Appearance of dry, scaly lesions on various parts of the body such as skin, nails and scalp are the main symptoms of ringworms.
Question 297 of 446
📘 CLASS XII
For infectious agents transmitted through food and water (e.g., typhoid), the cleaning and disinfection of ____ is essential for public hygiene.
Public hygiene includes periodic cleaning and disinfection of water reservoirs, pools, cesspools and tanks.
Question 298 of 446
📘 CLASS XII
The mucous coating of the epithelium lining the respiratory and gastrointestinal tracts acts as a ____ barrier in innate immunity.
Mucus coating of the epithelium lining the respiratory, gastrointestinal and urogenital tracts are physical barriers.
Question 299 of 446
📘 CLASS XII
Tears from the eyes act as a ____ barrier, preventing microbial growth.
Tears from eyes are physiological barriers, preventing microbial growth.
Question 300 of 446
📘 CLASS XII
Acquired immunity is characterized by memory and being pathogen ____.
Acquired immunity is pathogen specific and is characterised by memory.
