Question

the unicellular organism that sour milk to make curd are , options bacteria, viruses,fungi, protozoa​

Answer 1

Answer:

bacteria

Explanation:

A bacterium known as lactobacillus converts milk into curd and make it sour.

Answer 2

Answer:

lactobacillus bateria

Explanation:

lactobacillus bacteria secrete lactic acid which acts on lactose sugar present in the milk and convert this lactose sugar into lactic acid which make it sour