CBSE 12th Standard Biology Subject Microbes in Human Welfare HOT Questions 3 Marks Questions With Solution 2021
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CBSE 12th Standard Biology Subject Microbes in Human Welfare HOT Questions 3 Marks Questions With Solution 2021
12th Standard CBSE
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Reg.No. :
Biology
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An organic farmer releies on natural predection for controlling plant pests and diseases. Justify giving reasons why this is considered to be holistic approch.
(a) -
Name 'A' and 'B' in the following equations:
Sugary juice \(\underrightarrow { 'A' } \) Ethanol + H2 O ; Ethanol \(\underrightarrow { Acetobacter\quad aceti } \) B(a) -
What is the role of microbes in sewage treatment plant?
(a) -
Name the gobar gas liberated from a biogas plant.Which type of bacteria are responsible for its production? What are the advantages of using it as a source of energy?
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As we are going to face a great crisis of fossil fuel in near future, suggest an eco-friendly and pollution free alternative source of energy for rural areas which is dependent on microbial activity.
(a)
3 Marks
