Take three bowls and mark as A, B, C. Pour lukewarm milk in bowl A, hot milk in bowl
B, cold milk in bowl C. Add one tea spoon of curd or butter milk in three bowls and
stir them slightly. Cover the bowls with lids. Keep the bowls undisturbed for five to
six hours. In which bowl milk turned into curd? Give your reasons
SCERT Class 8 Telangana, Biology Chapter 3 Story of Microorganisms
Answers
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Out of the three bowls A B C, bowl A with lukewarm milk will turn into milk. The reason for the lukewarm setting the milk is that it contains lectobesilus bacteria.
These bacteria helps to change the milk into curd. the bowl B with hot milj kill the bacterias and so will the bowl C.
Answered by
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Explanation:
the lukewarm milk turned into curd because the atmostphere between 30 c -40 c is favourable for the curdling of milk the lukewarm condition ofmilk is favorable for growth of micro organisms called lactobacillus . lactobacillus helps curdling milk the temperature below and above lukewarm conditions may lessen the growth of lactobacillus bacteria which further slows down the curdling of milk
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