What Are Common Applications of Microbes in Human Welfare?
This page offers high-quality Biology And Human Welfare MCQ practice for NEET aspirants. Test your knowledge with exam-relevant questions, ensure conceptual clarity, and boost your confidence for the NEET exam. Practicing these targeted MCQs gives you the edge to score higher and helps you revise key topics, aligned with the official NEET biology syllabus.
What are Biology And Human Welfare MCQs?
Biology And Human Welfare MCQs are multiple-choice questions created from key concepts such as microbes in human welfare, human health, immunity, disease, food production, antibiotics, and public health. These MCQs follow the NEET exam pattern and test both your factual recall and deep understanding, preparing you for scoring questions in the actual exam.
Why Practice NEET MCQs?
Practicing NEET MCQs sharpens your speed, accuracy, and time management. Solving chapterwise sets helps you reduce errors, avoid negative marking, and strengthen important concepts. Top NEET scorers use MCQ practice to identify weak spots. For further topic-wise practice, Vedantu’s Biology Chapterwise Test is highly recommended.
Biology And Human Welfare MCQ Practice Questions
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Baculoviruses are mainly used in:
A. Biofertilizer production
B. Biocontrol of insect pests
C. Vaccination programs
D. Sewage treatment
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Which fungus produces the immunosuppressive drug cyclosporin A?
A. Aspergillus niger
B. Trichoderma polysporum
C. Saccharomyces cerevisiae
D. Monascus purpureus
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Pectinases are widely used in the industry for:
A. Clarification of fruit juices
B. Cheese ripening
C. Baking bread
D. Antibiotic production
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Which microorganism is mainly responsible for converting milk to curd?
A. Rhizobium
B. Penicillium
C. Lactobacillus
D. Streptococcus pneumoniae
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The holes in Swiss cheese are due to:
A. Propionibacterium shermanii
B. Lactobacillus acidophilus
C. Saccharomyces cerevisiae
D. Clostridium butylicum
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Which is a non-biodegradable waste?
A. Vegetable peels
B. Paper
C. Plastic
D. Cotton cloth
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Which vaccine is administered to prevent tuberculosis?
A. OPV
B. Hepatitis B
C. BCG
D. Rabies
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Streptokinase, used to dissolve blood clots, is produced by:
A. Streptomyces
B. Streptococcus
C. Saccharomyces
D. Bacillus
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Large-scale production of ethanol employs:
A. Acetobacter aceti
B. Saccharomyces cerevisiae
C. Lactobacillus bulgaricus
D. Clostridium tetani
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Which chemical agent is commonly used for laboratory fumigation?
A. Formaldehyde
B. Ethanol
C. Acetone
D. Benzene
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BOD (Biological Oxygen Demand) in waste water measures:
A. Oxygen produced by plants
B. Oxygen required by aerobic microbes
C. Total dissolved salts
D. Temperature of the water
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Pusa Gaurav is a crop variety resistant to:
A. Aphids
B. Bacterial blight
C. Stem borer
D. Bollworms
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Which of the following is employed for the treatment of sewage?
A. Activated sludge
B. Compost heap
C. Peat bog
D. Marsh gas
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Match the acid to its primary microbial producer: Citric acid - (?), Butyric acid - (?), Acetic acid - (?), Lactic acid - (?)
A. Aspergillus niger, Clostridium butylicum, Acetobacter aceti, Lactobacillus
B. Clostridium butylicum, Acetobacter aceti, Lactobacillus, Aspergillus niger
C. Acetobacter aceti, Aspergillus niger, Lactobacillus, Clostridium butylicum
D. Lactobacillus, Acetobacter aceti, Clostridium butylicum, Aspergillus niger
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Which of the following is not used in food industry?
A. Aspergillus niger
B. Trichoderma polysporum
C. Lactobacillus
D. Saccharomyces cerevisiae
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The natural method of pest control using living organisms is called:
A. Bioremediation
B. Biological control
C. Pasteurization
D. Eutrophication
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Match the following: (A) Citric acid, (B) Ethanol, (C) Statins, (D) Cyclosporin-A with their producing organisms:
A. (I) Trichoderma polysporum, (II) Monascus purpureus, (III) Saccharomyces cerevisiae, (IV) Aspergillus niger
B. (IV) Aspergillus niger, (III) Saccharomyces cerevisiae, (II) Monascus purpureus, (I) Trichoderma polysporum
C. (III) Saccharomyces cerevisiae, (IV) Aspergillus niger, (II) Monascus purpureus, (I) Trichoderma polysporum
D. (II) Monascus purpureus, (I) Trichoderma polysporum, (III) Saccharomyces cerevisiae, (IV) Aspergillus niger
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What is the biggest limitation in conventional plant breeding?
A. Lack of hybridization techniques
B. Availability of desirable genes
C. Shortage of seeds
D. Cost of fertilizer
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Which feature in cotton plants offers resistance to jassids?
A. Solid stem
B. High aspartic acid
C. Hairy leaves
D. Smooth leaves
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Which enzyme is mainly used for clarifying bottled fruit juices?
A. Streptokinase
B. Pectinase
C. Cellulase
D. Amylase
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Fermentation in food processing is best defined as:
A. Conversion of proteins to amino acids
B. Extraction of energy from carbohydrates anaerobically
C. Removal of toxins using heat
D. Breakdown of fats by lipases
MCQ Answer Key
| Q.No. | Answer | Explanation |
|---|---|---|
| 1 | B | Baculoviruses control insect pests in crops (biocontrol). |
| 2 | B | Trichoderma polysporum is the source of cyclosporin A. |
| 3 | A | Pectinases clarify fruit juices by breaking down pectin. |
| 4 | C | Lactobacillus ferments lactose to lactic acid, forming curd. |
| 5 | A | Propionibacterium shermanii produces CO2, creating holes in Swiss cheese. |
| 6 | C | Plastic is a synthetic, non-biodegradable waste. |
| 7 | C | BCG vaccine is administered against tuberculosis. |
| 8 | B | Streptokinase is obtained from Streptococcus. |
| 9 | B | Saccharomyces cerevisiae (yeast) makes ethanol in fermentation tanks. |
| 10 | A | Formaldehyde is standard for laboratory and equipment fumigation. |
| 11 | B | BOD represents oxygen required by microbes to decompose organic matter. |
| 12 | A | Pusa Gaurav is a mustard variety resistant to aphid insects. |
| 13 | A | Activated sludge is used in secondary sewage treatment stages. |
| 14 | A | These microbes produce the respective acids: citric (Aspergillus niger), butyric (Clostridium butylicum), acetic (Acetobacter aceti), lactic (Lactobacillus). |
| 15 | B | Trichoderma polysporum is not used for food production but for making cyclosporin A. |
| 16 | B | Biological control uses living organisms to manage pests. |
| 17 | B | Aspergillus niger (IV), Saccharomyces cerevisiae (III), Monascus purpureus (II), Trichoderma polysporum (I). |
| 18 | B | Availability of desirable genes is the main constraint of plant breeding. |
| 19 | C | Hairy leaves help resist jassid pests in cotton. |
| 20 | B | Pectinase is commonly added to bottled juices for clarification. |
Explanations clarify reasoning behind each answer and help students understand important NEET concepts.
How These Biology And Human Welfare MCQs Help in NEET
These MCQs target high-yield NEET topics like human diseases, immunity, antibiotics, food production, and biotechnology. Practice improves concept mastery and accuracy. Get more NEET-level MCQs on human welfare at Vedantu’s Microbes in Human Welfare MCQ page for chapter-specific revision and analytics.
NEET Biology Preparation Tips & Next Steps
- Practice MCQs daily to boost speed and reduce silly mistakes.
- Revise explanations to ensure strong concept clarity for NEET.
- Analyze your weak topics and focus on their revision before the exam.
- Try Vedantu’s Biology Full Syllabus NEET Practice Test for complete mock exam experience.
- Track scores over time to monitor progress and boost confidence.
Practicing Biology And Human Welfare MCQ boosts NEET performance by strengthening accuracy, recall, and conceptual understanding. Regular revision using such MCQ sets sharpens speed and exam readiness. Use Vedantu’s NEET MCQ resources to maximize your scores and approach the NEET exam with confidence and clarity.
FAQs on Biology And Human Welfare MCQ: Objective Questions and Detailed Solutions
1. Where can I get NEET Biology and Human Welfare MCQs with answers?
NEET Biology and Human Welfare MCQs with answers are available through dedicated online practice tests and downloadable PDFs. Students can practice chapterwise multiple-choice questions with detailed answer keys and explanations, covering important NEET topics such as microbes in human welfare, human diseases, and immunity for self-evaluation and revision. These resources typically feature:
- Chapterwise MCQ sets based on the latest NEET exam patterns
- Verified answer keys and brief solutions for each question
- Difficulty level breakdowns to assess your strengths and weaknesses
2. Is biology and human welfare important for NEET 2025?
Biology and Human Welfare is highly important for NEET 2025 due to its frequent appearance in the exam and significant weightage in the biology syllabus. Key reasons include:
- Covers essential topics like microbes, diseases, immunity, and human health
- Accounts for multiple questions in the NEET exam each year
- Provides an opportunity to score easy marks with proper revision and practice
- Improves your overall biology rank and confidence
3. What are the major topics in Biology and Human Welfare NEET?
Major topics in Biology and Human Welfare for NEET include:
- Microbes in Human Welfare – roles of bacteria, fungi, viruses in food and industry
- Human Health and Diseases – common diseases, immunity, AIDS, vaccines
- Strategies for Enhancement – food production, breeding, and biotechnology
- Immunity and Disease Prevention – types of immunity, vaccination, and disorders
4. How to prepare Biology and Human Welfare MCQs for NEET?
To prepare Biology and Human Welfare MCQs for NEET, students should follow a targeted revision and practice strategy:
- Review key NCERT chapters and focus on high-yield subtopics
- Solve previous years’ NEET MCQs and identify recurring question patterns
- Regularly attempt online chapterwise MCQ tests with instant scoring
- Analyze performance analytics to spot and improve weak areas
- Memorize important terms like microbes, diseases, immunity, BCG vaccine, etc.
5. What is the weightage of Biology and Human Welfare in NEET?
The weightage of Biology and Human Welfare in NEET varies yearly but typically covers 3–4 questions in the biology section. Key points:
- Usually contributes around 12–16 marks in NEET biology
- Includes questions on microbes, immunity, vaccines, and diseases
- Consistent practice of this chapter can boost your overall score
6. Can I download the Biology and Human Welfare MCQ PDF for NEET?
Yes, you can download Biology and Human Welfare MCQ PDFs for NEET from reputable educational websites. These PDFs offer:
- Topic-wise MCQs based on the NEET syllabus
- Verified answers with short explanations
- Convenient offline study and revision before exams
7. How are NEET Biology and Human Welfare MCQ practice tests scored?
NEET Biology and Human Welfare MCQ practice tests follow the official NEET marking scheme:
- +4 marks for each correct answer
- -1 mark deduction for each incorrect answer (negative marking)
- No marks for unanswered questions
- Instant scoring and analytics for self-evaluation
8. Are answer keys and explanations provided for these NEET MCQ tests?
Yes, detailed answer keys and explanations are provided for NEET Biology and Human Welfare MCQ tests. Benefits include:
- Transparent checking of each solved question
- Clear explanations to help understand mistakes
- Stepwise solutions for conceptual clarity and revision
9. What is a sample NEET Biology and Human Welfare MCQ?
Sample question: Which vaccine is injected to prevent tuberculosis?
Options: a) BCG b) Polio c) Hepatitis d) Rabies
Correct Answer: a) BCG
These samples reflect NEET-level question patterns and test your knowledge of important topics like vaccines, diseases, and microbes.
10. How can I avoid negative marking in NEET Biology MCQ practice?
To avoid negative marking in NEET Biology MCQ practice:
- Answer only when confident; skip unsure questions to prevent mistakes
- Practice with timed tests to improve speed and accuracy
- Review explanations to learn from errors and avoid repeating them
- Focus on weak topics during revision (e.g., immunity, diseases, vaccines)
11. How do test analytics help improve NEET Biology and Human Welfare scores?
Test analytics in NEET Biology practice tests offer key insights to boost scores by:
- Tracking accuracy and speed for each chapter
- Highlighting frequent mistakes and weak topics
- Measuring progress over multiple tests
- Guiding targeted revision before NEET 2025
