EXERCISE # 2 A.Very Short Answer Types Questions Q.14   Q.1 What are microorganisms ?  Q.15  Q.2   Name on example of each of the following : (a) bacteria (b) virus (c) fungi (d) algae (e) protozoa. Q.16 Q.17 Name two food which are preserved by sun drying. Name the microorganism which can fix atmospheric nitrogen.  Q.5 Where do Rhizobium bacteria live ? Q.18  Which are the microorganisms that are useful in nitrogen cycle ?  Give one example of the process of fermentation as applied in our day-to-day life.  Q.20 Q.21  Q.22 Q.23 What are antibiotics ? Give two examples.  In what respect are fungi different from algae ? Describe the principles on which the varies methods of food preservation are based. Name the causal agent of the following diseases : tuberculosis, polio, athlete's foot, dysentery  State two advantages of food preservations. Q.24 Why do vegetables and fruits remain fresh for a few days when kept in a refrigerator ? How does bacteria play an important role in medicine as well as in several industries ? Q.25 Write the steps involves in N2 cycle.  Q.11 What is the economic importance of fungi in agriculture and industry ?   Q.10 What are viruses ? How do they differ from other microbes ?  B.Short Answer Types Questions Q.9 Name three antibiotics known to you. C.Long Answer Types Questions Name the two principles in which food preservation methods are based.  Q.8  Q.19  Q.7 What is the economic importance of bacteria in agriculture ?   Q.6 What are protozoa ?   Q.4 What are algae and where would you find them growing.   Q.3 List five methods of food preservation learnt by you.  Q.12 What is the process of irradiation ? Q.13 Why do farmers cultivate plants of legume family ?

Microorganisms Exercise # 2

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