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:

What is the reason behind production of large holes in ‘Swiss Cheese’?

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:

Match List I with List II

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?

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

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

Which of the following is wrongly matched in the given table?

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: