NEET Biology question

Which one of the following combinations of microbes is responsible for the formation and flavor of yoghurt?

(A)Lactobacillus casei and Streptococcus thermophillusCorrect
(B)Rhizobium meliloti and Azotobacter sp
(C)Rhodospirillum rubrum and Salmonella typhosa
(D)Bacillus subtilis and Escherichia coli

Answer: (A)

Solution

Yoghurt is formed by incubating pasteurized, homogenized milk with a starter culture typically containing *Streptococcus thermophilus* and *Lactobacillus* species (e.g., *Lactobacillus casei/bulgaricus*), which ferment lactose into lactic acid, giving

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Question ID VK-087673