No. | Conditions | Colonial growths |
1 | The control petri dish had around 75 countable colonies. It marked the optimum growth as compared to the other petri dishes | 75 colonies
|
2 | The petri dish whose lid was covered with sun screen 50 | 60 colonies |
3 | The petri dish that was covered with a cotton cloth | 25 colonies
|
4 | The petri dish that was covered with polyester cloth | 15 colonies
|