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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 401 of 446
📘 CLASS XII
The use of drugs and alcohol during pregnancy is known to adversely affect the ____.
The use of drugs and alcohol during pregnancy is also known to adversely affect the foetus.
Question 402 of 446
📘 CLASS XII
____ and physical contact do not spread HIV/AIDS.
HIV/AIDS is not spread by mere touch or physical contact.
Question 403 of 446
📘 CLASS XII
In cancer, the massive production of cells leads to the formation of a ____.
Cancerous cells just continue to divide giving rise to masses of cells called tumors.
Question 404 of 446
📘 CLASS XII
Opioids, cannabinoids and coca alkaloids are mostly obtained from ____ plants.
Majority of these (abused drugs) are obtained from flowering plants.
Question 405 of 446
📘 CLASS XII
Some abused drugs are also obtained from ____, besides flowering plants.
Some abused drugs are obtained from fungi.
Question 406 of 446
📘 CLASS XII
The use of anti-histamine, adrenalin and steroids helps to quickly reduce the ____ of allergy.
The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy.
Question 407 of 446
📘 CLASS XII
Innate immunity is accomplished by providing different types of ____ to the entry of foreign agents into our body.
Innate immunity is accomplished by providing different types of barriers to the entry of the foreign agents.
Question 408 of 446
📘 CLASS XII
Lymphocytes differentiate into antigen-sensitive lymphocytes in the ____ lymphoid organs.
Primary lymphoid organs are where immature lymphocytes differentiate into antigen-sensitive lymphocytes.
Question 409 of 446
📘 CLASS XII
The secondary lymphoid organs are the sites where the lymphocytes ____ to become effector cells.
Secondary lymphoid organs provide sites where lymphocytes proliferate to become effector cells.
Question 410 of 446
📘 CLASS XII
The main barrier that prevents entry of micro-organisms on our body is the ____.
Skin on our body is the main physical barrier preventing entry of the micro-organisms.
