PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoClassify the steps:
Swan neck experiment:
Answer variants:
The curved neck of the flasks acted as a filter.
When these flasks were kept months together, no life appeared in them as the neck of the flask trapped the dust particles.
Hence, through this experiment, he concluded that the flasks kept airtight with dead yeast did not produce any life forms. However, another flask that was kept open to the air produced living organisms from the deceased yeast.
He boiled the broth in the flask so that the microorganisms in this flask are killed.
When this neck was broken off, the broths developed colonies of microbes such as bacteria.
He took broths (killed yeast) in a long-necked flask, and then he bent the neck of the flask (swan neck flask).
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Results and conclusion:
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