Microbes in human welfare practice · Mixed difficulty

Option D (If A is false, but R is true) is correct because Baculoviruses are narrow-spectrum insecticides, making them suitable for integrated pest management in ecologically sensitive areas.

Option B (An yeast) is correct because statins are produced by the yeast *Monascus purpureus*.

Option A (If both A and R are true and R is the correct explanation of A) is correct because Cyclosporin-A is indeed an immunosuppressant agent, and this is why it's administered to organ transplant patients.

Option A (Trichoderma polysporum) is correct because Cyclosporin-A, an immunosuppressant, is produced by the fungus *Trichoderma polysporum*.

Option B (Glomus) is correct because Glomus is a genus of fungi that commonly forms mycorrhizal associations with plant roots, aiding in nutrient absorption.

The correct answer is A (Anaerobic digestion removes pathogens and bacteria) because the anaerobic digestion process in biogas production eliminates many pathogens and harmful bacteria.

Option D (I, II and III) is correct because organic farming incorporates biofertilizers, biopesticides, crop rotation, and locally developed pest-resistant varieties.

Option D (Bread, ethanol, wine) is correct because yeast fermentation is used to produce bread (through CO2 production), ethanol (in alcoholic beverages), and wine (through ethanol production from grapes).

Option A ($C{O_2}$) is correct because carbon dioxide is released during fermentation, causing the dough to rise.

Option C (Both statements are correct) is correct because lipases are indeed used in detergent formulations and are effective at removing oily stains.

The correct answer is D (Hydrolysis - Acetogenesis - Methanogenesis) because this is the correct sequence of steps in the anaerobic digestion process for biogas production.

The correct answer is D (Whooping cough) because whooping cough is a bacterial infection that can be treated with antibiotics.

Option A (I and II) is correct because yeast is used in the commercial production of ethanol and bread.

Option C (Biocontrol) is correct because biocontrol involves using natural enemies like viruses, bacteria, and insects to control pests and pathogens.

Option B is correct because aerobic bacteria consume organic matter in wastewater, reducing the BOD (Biochemical Oxygen Demand).

Option B (Statin) is correct because statins are a class of drugs used to lower blood cholesterol levels commercially.

Option B (Cyclosporin A) is correct because Trichoderma polysporum is a fungus known for producing the immunosuppressant drug Cyclosporin A.

Option A (Fleming) is correct because Alexander Fleming discovered penicillin in 1928.

Correct Answer + Core Reason: All of these. All listed microbes are used in industrial waste removal.

Step-by-Step Solution:

Step 1: Consider the role of microbes in waste management.

Step 2: Tricoderma sp. can degrade pollutants.

Step 3: Aspergillus niger can remove heavy metals.

Step 4: Pseudomonas putida is known for bioremediation of pollutants.

Step 5: Therefore, all the given microbes are used in the removal of industrial wastes.

Why other options are wrong:
- Option A: Tricoderma sp. is correct but not complete as it doesn't include all possible microbes.
- Option B: Aspergillus niger is correct but not complete as it doesn't include all possible microbes.
- Option C: Pseudomonas putida is correct but not complete as it doesn't include all possible microbes.

Key Concepts:
- Bioremediation
- Microbial degradation
- Waste management

Memory Aids:
- Microbes clean up messes!

Quick Tips:
- Remember the different microbes and their specific bioremediation capabilities.

Option B (FAD) is correct because Vitamin B2 (Riboflavin) is a precursor to FAD (Flavin Adenine Dinucleotide), which acts as a prosthetic group for many enzymes.

Option A (Bacteria) is correct because bacteria, particularly *Lactobacillus*, convert milk into curd.

Option C is correct because statement (c) is true (some microbes can survive at high temperatures) and statement (d) is incorrect (Methanogen is an Archaebacteria).

Option D (I, II and III) is correct because mycorrhizae provide multiple benefits to plants, including resistance to root-borne pathogens, tolerance to salinity and drought, and overall growth enhancement.

Option A is correct because both the assertion and reason are true, and the reason correctly explains why a small part of activated sludge is pumped back into the aeration tank.

Option A is incorrect. Neem tree is a source of biopesticide, biofertilizer and anti-fertility compound.

Option C (Lowering blood cholesterol statins) is correct because Monascus purpureus is known for producing statins that lower blood cholesterol.

Option D (Indian Agricultural Research Institute) is correct because IARI stands for the Indian Agricultural Research Institute.

Option D (Biogas) is correct because anaerobic fermentation of agricultural wastes primarily produces biogas, which is a mixture of gases including methane and carbon dioxide.

Option C (II and IV) is correct because methanogens are found in anaerobic environments like the rumen of cattle and anaerobic sludge.

Option C is correct because the assertion is true about antibiotics, but the reason is false as \"antibiotic\" means \"against life\" for microbes, not humans.