NEET Botany Microbes In Human Welfare Class 12 Questions

Large holes in 'Swiss cheese' are due to production of large amount of CO₂ by bacterium

Which of the following is a free-living biocontrol microbial agent for plant pathogen?

Select the organism exploited for producing immunosuppressive agent in organ-transplant patients.

Given below are two statements Statement I: When Streptococcus pneumoniae bacteria are grown on a culture plate, some produce smooth shiny colonies (S) while others produce rough colonies(R). Statement II: Mice infected with the (S) strain do not develop pneumonia but mice infected with the R strain die from pneumonia infection. Choose the correct answer from the option given below:

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

Streptokinase produced by bacterium Streptococcus is used for

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:

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:

Match List I with List II

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

Match List - I with List - II.

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

Match the following columns and select the correct option.

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

Match the following organisms with the products they produce:

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

Which of the following in sewage treatment removes suspended solids?

High value of BOD (Biochemical Oxygen Demand) indicates that :-

The guts of cow and buffalo possess

What gases are produced in anaerobic sludge digesters?

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicine, Sweet pea, Petunia, Indigofera, Mustard, Soybean, Tobacco and groundnut how many plants have corolla with valvate aestivation ?

Microbe used for biocontrol of pest butterfly caterpillars is: