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By Ankit Gupta
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Updated on 10 Jun 2026, 11:30 IST
Biology and Human Welfare is one of the most important units in the NEET Biology syllabus. This chapter helps students understand how biology improves human health, supports disease prevention, and contributes to the welfare of society. It covers important topics such as human health and diseases, immunity, vaccines, microbes in human welfare, antibiotics, sewage treatment, biogas production, biofertilizers, and biodiversity conservation.
Every year, NEET includes several questions from this unit because it combines scientific concepts with real-life applications. Students are expected to understand the causes of diseases, the role of the immune system, the importance of microorganisms, and various methods used to improve human life and protect the environment.
To help NEET 2026 aspirants prepare effectively, we have compiled a set of important multiple-choice questions based on the latest NEET syllabus and previous exam trends. These questions are designed to strengthen conceptual understanding, improve problem-solving skills, and boost confidence for the exam.
Regular practice of these important questions will help students identify key concepts, revise important facts quickly, and improve their accuracy in the Biology section. Mastering this unit can help you score valuable marks and move one step closer to achieving your dream NEET rank.
Ques 1. Which of the following diseases is caused by a protozoan?
Answer: (2) Malaria
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Ques 2. The causative agent of Typhoid is:
Answer: (2) Salmonella typhi
Ques 3. Widal test is used for the diagnosis of:
Answer: (3) Typhoid
Ques 4. Which mosquito acts as the vector of malaria?
Answer: (3) Female Anopheles
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Ques 5. Ringworm is caused by:
Answer: (3) Fungi
Ques 6. The Human Immunodeficiency Virus (HIV) attacks:
Answer: (3) Helper T-lymphocytes
Ques 7. AIDS was first reported in:
Answer: (2) 1981
Ques 8. Which of the following is a sexually transmitted disease?
Answer: (3) Syphilis
Ques 9. Which of the following diseases can be prevented by DPT vaccine?
Answer: (4) All of these
Ques 10. Antibodies are produced by:
Answer: (2) Plasma cells
Ques 11. The first antibiotic discovered was:
Answer: (2) Penicillin
Ques 12. Penicillin was discovered by:
Answer: (3) Alexander Fleming
Ques 13. The microorganism used in curd formation is:
Answer: (2) Lactobacillus
Ques 14. Production of biogas mainly involves:
Answer: (1) Methanogens
Ques 15. Which of the following microbes is used in commercial production of citric acid?
Answer: (1) Aspergillus niger
Ques 16. The bacterium used as a biofertilizer in leguminous plants is:
Answer: (2) Rhizobium
Ques 17. Bioprospecting refers to:
Answer: (3) Exploring biodiversity for commercially valuable products
Ques 18. Which of the following is an invasive alien species?
Answer: (3) Water hyacinth
Ques 19. The current species extinction rate is approximately:
Answer: (3) 100–1000 times higher than pre-human times
Ques 20. Steller's sea cow became extinct due to:
Answer: (3) Over-exploitation by humans
Ques. Exploring molecular, genetic and species-level diversity for products of economic importance is called:
Answer: Bioprospecting
Ques. Since the origin and diversification of life on Earth, there have been five episodes of mass extinction. How is the sixth extinction different?
Answer: Current extinction rates are 100–1000 times faster than in pre-human times
Ques. Which of the following statements are correct?
A. Amazon rainforest cleared for soybean cultivation is an example of habitat loss.
B. Steller's sea cow and passenger pigeon became extinct due to over-exploitation.
C. Nile perch helped population growth of cichlid fish in Lake Victoria.
D. Water hyacinth is an invasive species.
E. Extinction of a species does not affect associated species.
Answer: (2) A, B and D only ✅
Ques. Match List I with List II
| List I | List II |
| A. Decomposition | III. Breaking down of complex organic matter into inorganic substances |
| B. Detritus | IV. Dead remains of plants and animals including faecal matter |
| C. Mineralisation | II. Release of inorganic nutrients by microbial activity |
| D. Humification | I. Accumulation of dark coloured amorphous colloidal substance |
Answer: (2) A-III, B-IV, C-II, D-I
Ques. Which are correct?
A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.
B. Chemotherapeutic drugs are used to kill non-cancerous cells.
C. α-interferon activates the cancer patient's immune system and helps in destroying the tumour.
D. Chemotherapeutic drugs are biological response modifiers.
E. In the case of leukaemia blood cell counts are decreased.
Correct Answer: A and C only
Ques. What are the potential drawbacks in adoption of the IVF method?
A. High fatality risk to mother
B. Expensive instruments and reagents
C. Husband/wife necessary for being donors
D. Not available in India
E. Less adoption of orphans
F. Possibility that the early embryo does not survive
Correct Answer: B, E and F only
Ques. Consider the following statements:
A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.
B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.
C. The first polar body is associated with the formation of the primary oocyte.
D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.
Correct Answer: A and B only
Ques. After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:
A. Thymus
B. Bone marrow
C. Spleen
D. Lymph nodes
E. Peyer's patches
Correct Answer: C, D and E only
Ques. Which of the following type of immunity is present at the time of birth and is a nonspecific type of defence in the human body?
Correct Answer: (4) Innate Immunity
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Biology and Human Welfare is an important unit in the NEET syllabus because it covers topics related to human health, diseases, immunity, microbes, and environmental welfare. Questions from this unit are frequently asked in NEET, making it essential for scoring well in the Biology section.
Students should focus on Human Health and Disease, Immunity, Vaccination, AIDS, Cancer, Drugs and Alcohol Abuse, Microbes in Human Welfare, Sewage Treatment, Biogas Production, Biofertilizers, and Biodiversity Conservation. These topics are commonly tested in NEET.
Practicing important questions helps students revise key concepts, understand the NEET exam pattern, improve accuracy, and identify weak areas. It also boosts confidence and enhances problem-solving skills for the actual exam.
While the exact number varies each year, students can generally expect around 4–6 questions from topics related to Biology and Human Welfare, including Human Health and Disease, Microbes in Human Welfare, and Biodiversity & Conservation. Regular revision of these chapters can help secure valuable marks in NEET.