Previous Year Papers NEET Biology Class 12 – Microbes in Human Welfare

Microbes in Human Welfare is a crucial chapter of NEET Biology Class 12 that explains the roles of bacteria, fungi, and viruses in agriculture, industry, medicine, and environmental sustainability. Mastery of this chapter is essential for answering both theoretical and application-based NEET questions.

NEET previous year papers frequently include questions on industrial microbiology, biofertilizers, bioremediation, antibiotics, and microbial biotechnology. Practicing PYQs helps students strengthen understanding of the applications of microbes. Studentbro.in provides exam-focused material for effective preparation.

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Microbes in Agriculture – NEET PYQ Focus

• Biofertilizers – Rhizobium, Azotobacter, Azospirillum fix atmospheric nitrogen.

• Composting – Use of microbes in vermicompost and organic fertilizer production.

• Biocontrol Agents – Bacillus thuringiensis (Bt) controls pests.

NEET questions often test microbial applications in enhancing soil fertility and controlling pests.

Microbes in Industry – Important NEET Concepts

• Fermentation – Production of alcohol, ethanol, citric acid, and organic acids using yeast and bacteria.

• Food Industry – Microbes used in cheese, yogurt, and antibiotics production.

• Bioactive Compounds – Antibiotics (Penicillin), enzymes (amylase, protease).

Previous year papers may ask about microbial strains, products, and industrial applications.

Microbes in Medicine – Key Concepts

• Antibiotics – Produced by fungi (Penicillium) and bacteria (Streptomyces).

• Vaccines – Microbes or their components used to stimulate immunity.

• Probiotics – Beneficial bacteria (Lactobacillus, Bifidobacterium) maintain gut health.

NEET PYQs often include microbial roles in health and disease prevention.

Microbes in Environmental Sustainability

• Bioremediation – Microbes degrade pollutants (oil spills, pesticides).

• Waste Management – Sewage treatment by microbial action.

• Nitrogen Fixation – Converts atmospheric nitrogen into usable forms for plants.

Previous year papers frequently test microbial applications in environment protection.

Harmful Microbes – NEET PYQ Focus

• Pathogens – Bacteria (Salmonella), viruses (HIV), fungi (Aspergillus).

• Food Spoilage – Microbial contamination causes foodborne diseases.

• Plant Pathogens – Affect crops and reduce yield.

NEET questions may ask differences between beneficial and harmful microbes.

Importance of Previous Year Papers for NEET Biology

Practicing previous year papers helps students identify frequently asked topics, reinforce conceptual understanding, and improve speed. PYQs for Microbes in Human Welfare focus on agricultural applications, industrial processes, medical uses, and environmental sustainability.

Conclusion

Previous Year Papers of NEET Biology Class 12 Microbes in Human Welfare are essential for mastering microbial applications in human life. This chapter requires clear understanding of beneficial microbes, industrial and medicinal applications, and environmental roles.

Regular practice of PYQs helps students enhance conceptual clarity, diagram interpretation, and application skills. Studentbro.in provides structured, reliable, and exam-focused content to help NEET aspirants succeed.