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Explain the Bunsen Burner?
It is a type of gas burner that gives very hot flame by allowing air to enter at the base and mix with the gas. It is used -
(a) For sterilizing inoculating loop/needle/forcep etc.
(b) For sterilizing mouth of the flask, test tubes and other glass apparatus.
(c) At the time of culturing or transferring the microorganisms to avoid contamination.
Here the sterilization is done with dry heat. If bunsen burner is not available, spirit lamp can be used.
Explain briefly about Foams Consider the following example. Take some liquid in a glass and agitate or shake it vigorously. What do you observe at the top of the liquid. Yes,
what so special for phylum annelida
Scope of zoology
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