/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 8 : Microbes in Human Welfare This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 The residual sludge after biogas production is rich in: Nitrogen and phosphorus Sulphur Carbon dioxide Sodium chloride 2 / 10 The bacterium used for acetic acid production is: Acetobacter aceti Aspergillus niger Clostridium butylicum Lactobacillus 3 / 10 Biogas plants are commonly operated in: Deserts Urban areas Rural areas Hills 4 / 10 ‘Flocs’ are formed by association of: Bacteria and fungal filaments Viruses and bacteria Protozoa and algae Cyanobacteria and fungi 5 / 10 The correct pair of microbe and product is: Streptococcus – Citric acid Clostridium butylicum – Acetic acid Monascus purpureus – Statin Aspergillus niger – Lactic acid 6 / 10 Reduction in BOD of sewage water indicates: Increase in pollution Increase in organic load Purification of water Growth of pathogens 7 / 10 Plants with mycorrhiza show improved: Drought tolerance Disease symptoms Water logging Seed germination only 8 / 10 In paddy fields, biofertiliser used is: Rhizobium Trichoderma Anabaena Monascus 9 / 10 Methanogens are present in: Rumen of cattle Human intestines Plant roots Soil crust 10 / 10 Trichoderma as a biocontrol agent mainly suppresses: Insect larvae Nematodes Pathogenic fungi Bacteria Your score is 0% Restart quiz
