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Biology and Human Welfare

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Every question from past board papers on Biology and Human Welfare, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. Which of the following is an example of non-distilled alcoholic beverage produced by yeast?

    4 marks · See worked answer →

  2. Streptokinase produced by bacterium Streptococcus is used for

    4 marks · See worked answer →

  3. Which of following organisms cannot fix nitrogen?

    A. Azotobacter

    B. Oscillatoria

    C. Anabaena

    D. Volvox

    E. Nostoc

    Choose the correct answer from the options given below:

    4 marks · See worked answer →

  4. Which of the following microbes is NOT involved in the preparation of household products?

    A. Aspergillus niger

    B. Lactobacillus

    C. Trichoderma polysporum

    D. Saccharomyces cerevisiae

    E. Propionibacterium sharmanii

    Choose the correct answer from the options given below:

    4 marks · See worked answer →

NEET UG 2024 question paper (official, booklet S6)

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  1. Match List I with List II

    List I: A. Clostridium butylicum; B. Saccharomyces cerevisiae; C. Trichoderma polysporum; D. Streptococcus sp.

    List II: I. Ethanol; II. Streptokinase; III. Butyric acid; IV. Cyclosporin-A

    Choose the correct answer from the options given below:

    4 marks · See worked answer →

NEET UG 2023 question paper (official, booklet G6)

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  1. Which one of the following statements is NOT correct?

    4 marks · See worked answer →

NEET UG 2022 question paper (official, booklet R6)

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  1. Which one of the following produces nitrogen fixing nodules on the roots of Alnus ?

    4 marks · See worked answer →

  2. Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called :

    4 marks · See worked answer →

  3. Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A :

    4 marks · See worked answer →

NEET UG 2021 question paper (official, booklet M4)

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  1. Match List - I with List - II.

    List - I | List - II

    (a) Protoplast fusion | (i) Totipotency

    (b) Plant tissue culture | (ii) Pomato

    (c) Meristem culture | (iii) Somaclones

    (d) Micropropagation | (iv) Virus free plants

    Choose the correct answer from the options given below.

    4 marks · See worked answer →

  2. Which of the following is not an objective of Biofortification in crops ?

    4 marks · See worked answer →

  3. Match List - I with List - II.

    List - I / List - II

    (a) Aspergillus niger (i) Acetic Acid

    (b) Acetobacter aceti (ii) Lactic Acid

    (c) Clostridium butylicum (iii) Citric Acid

    (d) Lactobacillus (iv) Butyric Acid

    Choose the correct answer from the options given below.

    4 marks · See worked answer →

NEET UG 2020 question paper (official, booklet E1)

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  1. The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :

    4 marks · See worked answer →

  2. Which of the following is put into Anaerobic sludge digester for further sewage treatment ?

    4 marks · See worked answer →

  3. Match the following columns and select the correct option.

    Column - I | Column - II

    (a) Clostridium butylicum | (i) Cyclosporin-A

    (b) Trichoderma polysporum | (ii) Butyric Acid

    (c) Monascus purpureus | (iii) Citric Acid

    (d) Aspergillus niger | (iv) Blood cholesterol lowering agent

    4 marks · See worked answer →

NEET UG 2019 question paper (official, booklet P1)

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  1. Which of the following is a commercial blood cholesterol lowering agent ?

    4 marks · See worked answer →

  2. Select the correct group of biocontrol agents.

    4 marks · See worked answer →

  3. Match the following organisms with the products they produce :

    (a) *Lactobacillus* (i) Cheese

    (b) *Saccharomyces cerevisiae* (ii) Curd

    (c) *Aspergillus niger* (iii) Citric Acid

    (d) *Acetobacter aceti* (iv) Bread

    (v) Acetic Acid

    Select the correct option.

    4 marks · See worked answer →

  4. *Thiobacillus* is a group of bacteria helpful in carrying out :

    4 marks · See worked answer →

  5. Which of the following can be used as a biocontrol agent in the treatment of plant disease ?

    4 marks · See worked answer →

NEET UG 2018 question paper (official, booklet EE)

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  1. Conversion of milk to curd improves its nutritional value by increasing the amount of

    4 marks · See worked answer →

  2. Which one of the following population interactions is widely used in medical science for the production of antibiotics ?

    4 marks · See worked answer →

NEET UG 2017 question paper (official, booklet B)

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  1. Select the mismatch :

    (1) Rhodospirillum - Mycorrhiza

    (2) Anabaena - Nitrogen fixer

    (3) Rhizobium - Alfalfa

    (4) Frankia - Alnus

    4 marks · See worked answer →

  2. Which of the following is correctly matched for the product produced by them ?

    4 marks · See worked answer →

  3. Which of the following in sewage treatment removes suspended solids ?

    4 marks · See worked answer →

NEET UG 2016 Phase 1 question paper (official, booklet A)

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  1. A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called :

    4 marks · See worked answer →

  2. Which of the following is wrongly matched in the given table ?

    Microbe | Product | Application

    (1) Trichoderma polysporum | Cyclosporin A | immunosuppressive drug

    (2) Monascus purpureus | Statins | lowering of blood cholesterol

    (3) Streptococcus | Streptokinase | removal of clot from blood vessel

    (4) Clostridium butylicum | Lipase | removal of oil stains

    4 marks · See worked answer →

  3. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the :

    4 marks · See worked answer →

NEET UG 2016 Phase 2 question paper (official, booklet ZZ)

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  1. Interspecific hybridization is the mating of

    4 marks · See worked answer →

  2. Match Column—I with Column—II and select the correct option using the codes given below :

    Column—I: a. Citric acid; b. Cyclosporin A; c. Statins; d. Butyric acid

    Column—II: (i) Trichoderma; (ii) Clostridium; (iii) Aspergillus; (iv) Monascus

    Codes :

    a b c d

    4 marks · See worked answer →