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Questions and Answers
Which of the following is the purpose of leaving the petri dishes in the laboratory for 3-4 days?
Which of the following is the purpose of leaving the petri dishes in the laboratory for 3-4 days?
- To expose petri dish K to air for 10-15 minutes
- To observe the development of microorganisms in each petri dish (correct)
- To label the petri dishes with culture medium
- To put a few drops of pond water in petri dish L
Which petri dish serves as the control in this experiment?
Which petri dish serves as the control in this experiment?
- Petri dish N
- Petri dish M
- Petri dish L
- Petri dish O (correct)
What should be recorded about the colonies of microorganisms in each petri dish?
What should be recorded about the colonies of microorganisms in each petri dish?
- Number of colonies in each petri dish
- Size of the colonies in each petri dish
- Type of water used in each petri dish
- Colour, pattern of growth, appearance (correct)
