Class XII · Biology practice

Human Health and Disease MCQs

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446 questions in this collection · Page 42 of 45

Question 411 of 446

📘 CLASS XII

Human Health And Disease

The yellow fluid secreted by the mother during the initial days of lactation is called ____.

The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies.

Question 412 of 446

📘 CLASS XII

Human Health And Disease

Cancer-causing viruses are called ____ viruses.

Cancer causing viruses called oncogenic viruses have genes called viral oncogenes.

Question 413 of 446

📘 CLASS XII

Human Health And Disease

The major cause of lung cancer is the chemical carcinogens present in ____ smoke.

The chemical carcinogens present in tobacco smoke have been identified as a major cause of lung cancer.

Question 414 of 446

📘 CLASS XII

Human Health And Disease

The use of high doses of drugs may lead to death due to heart failure or ____ failure.

Excessive doses of drugs may lead to coma and death due to respiratory failure, heart failure or cerebral hemorrhage.

Question 415 of 446

📘 CLASS XII

Human Health And Disease

Deteriorating relationships with family and friends and loss of interest in hobbies are common ____ signs of drug and alcohol abuse.

These are typical warning signs of drug and alcohol abuse.

Question 416 of 446

📘 CLASS XII

Human Health And Disease

Yoga has been practised since time immemorial to achieve physical and ____ health.

Yoga has been practised since time immemorial to achieve physical and mental health.

Question 417 of 446

📘 CLASS XII

Human Health And Disease

The genus of filarial worm causing filariasis are *W. bancrofti* and *W.* ____.

*Wuchereria (W. bancrofti* and *W. malayi*) cause elephantiasis.

Question 418 of 446

📘 CLASS XII

Human Health And Disease

The main lymphoid organ is the bone marrow, where all ____ cells including lymphocytes are produced.

The bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.

Question 419 of 446

📘 CLASS XII

Human Health And Disease

The secondary lymphoid organs are located at different points along the ____ system.

The lymph nodes (secondary lymphoid organs) are located at different points along the lymphatic system.

Question 420 of 446

📘 CLASS XII

Human Health And Disease

Acquired Immunity is achieved with the help of B-lymphocytes and ____-lymphocytes.

The acquired immune responses are carried out with the help of B-lymphocytes and T-lymphocytes.

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