Sketch few of the micro-organisms.

What are micro-organisms?

Which of the following micro-organisms is responsible for causing cholera?

Which instrument is used to see micro-organisms?

Which of the following micro-organisms can be seen only with the help of microscope?

Antiseptics and disinfectants either kill or prevent growth of micro-organisms. Identify which of the following statements is not true :

Under which group of micro-organisms Amoeba fall?

Name the different vitamins which are produced by micro-organisms.

Antibiotics are those chemicals which are obtained from the useful micro-organisms and are employed to kill some harmful micro-organisms. But all the antibiotics donot have medicinal importance. Discuss the following: Enlist the uses of antibiotics.