The growth of bacteria (lactobacillus) in milk leads to curd formation. A minimum bacterial population density of 0.8 (in suitable) is needed to form curd. In the graph below, the population density of lactobacillus in 1 litre of milk is plotted as a function of time, at two different temperature, 25°C and 37°C. Consider the following statements based on the data shown above:
i. The growth in bacterial population stops earlier at 37°C as compared to 25°C ii. The time taken for curd formation at 25°C is twice the time taken at 37°C Which one of the following options is correct?
both i and ii
neither i nor ii
Correct Option : A
I is true as very obvious from the given graph. II is false as the given graph shown only bacterial growth in milk but curd formation in milk may have other factors too like the purity of milk which might affect the speed of curd formation so II is false. Hence, (a) is the correct answer.