NEET Biology: Biology and Human Welfare Practice Questions
14 free multiple-choice questions on Biology and Human Welfare for NEET Biology, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more Biology and Human Welfare questions in the app →Q1. The condition known as Ringworm is a type of infection caused by which group of organisms?
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Correct answer: B — Fungi
Ringworm (Tinea) infections are caused by fungal infections (fungi).
Q2. Ringworm (Tinea) is a fungal infection. What is the primary mode of transmission for most types of ringworm?
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Correct answer: D — Direct skin-to-skin contact or fomites
Ringworm is caused by dermatophytes and is typically spread through direct contact with infected skin or contaminated objects (fomites).
Q3. Which of the following organisms is the causative agent responsible for the transmission of Malaria?
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Correct answer: B — Plasmodium spp.
Malaria is caused by protozoan parasites of the genus Plasmodium, which are transmitted to humans through the bite of infected female Anopheles mosquitoes.
Q4. Which disease is caused by the bacterium *Salmonella typhi* and is transmitted through contaminated food and water?
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Correct answer: A — Typhoid
Typhoid fever is caused by the bacterium *Salmonella typhi*, which causes Typhoid disease.
Q5. Which of the following parasites is responsible for the disease Ascariasis, commonly known as roundworm infection?
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Correct answer: D — Ascaris lumbricoides
Ascariasis is caused by the nematode worm *Ascaris lumbricoides*, which is a common intestinal parasite.
Q6. Which component of the immune system is responsible for mounting an adaptive response against specific pathogens, often involving the production of antibodies?
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Correct answer: B — Lymphocytes
Lymphocytes (T and B cells) are the key cells in the adaptive immune response, mediating specific immunity.
Q7. Which parasite causes the disease Ascariasis (Ascaris)?
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Correct answer: C — *Ascaris lumbricoides*
Ascariasis is caused by the nematode worm *Ascaris lumbricoides*, which is a type of roundworm.
Q8. Which disease is caused by the body's response to an infection and often involves the failure of the immune system to control the pathogen effectively?
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Correct answer: A — Common Cold
Pneumonia is a severe infection of the lungs, and the body's struggle against severe pathogens often highlights the functioning and limitations of the immune response.
Q9. Which type of immunity is provided when a vaccine is administered to the body against a specific disease?
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Correct answer: C — Active Immunity
Vaccines induce the body to produce its own antibodies and memory cells, which is the definition of active immunity.
Q10. Which vaccine is primarily associated with protecting against diseases like Measles, Mumps, and Rubella?
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Correct answer: D — MMR Vaccine
The MMR (Measles, Mumps, Rubella) vaccine provides immunity against these three viral diseases.
Q11. Ascariasis is a parasitic infection primarily affecting which organ system?
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Correct answer: D — Gastrointestinal system
Ascariasis involves the infection and infestation of the intestines, placing it under the category of gastrointestinal parasites.
Q12. Which of the following parasitic infections is transmitted primarily through the ingestion of contaminated food or water, leading to intestinal diseases like Amoebiasis?
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Correct answer: B — Ascariasis
Ascariasis (caused by *Ascaris* roundworms) is a parasitic infection acquired through the ingestion of contaminated food or water, leading to intestinal diseases, which aligns with the topic of parasites causing human diseases.
Q13. The symptoms of Dengue fever, which is a viral infection, primarily involve which system?
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Correct answer: B — Circulatory system
Dengue fever is characterized by high fever and often severe complications related to the circulatory system, such as plasma leakage.
Q14. The administration of vaccines is a fundamental principle of immunology. What is the primary mechanism by which vaccines stimulate the body's defense system?
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Correct answer: A — Inducing specific antibody production
Vaccines stimulate the adaptive immune system by introducing harmless antigens, prompting the body to produce specific antibodies (humoral immunity).
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