Class XII · Biology practice

Human Health and Disease MCQs

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446 questions in this collection · Page 30 of 45

Question 291 of 446

📘 CLASS XII

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

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

Human Health And Disease

Acquired immunity is characterized by memory and being pathogen ____.

Acquired immunity is pathogen specific and is characterised by memory.

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