Which of the following micro-organisms are involved in yoghurt production?LactobacillusPlasmodiumYeastPneumococcus

Micro-organisms Involved in Yoghurt Production

The primary micro-organisms involved in yogurt production are Lactobacillus species, particularly Lactobacillus bulgaricus and Streptococcus thermophilus. These bacteria ferment lactose, the sugar found in milk, producing lactic acid, which helps in thickening the milk and giving yogurt its characteristic tangy flavor.

Let's break down the options provided:

1. Lactobacillus: Correct choice. Lactobacillus is a key genus of bacteria used in yogurt production.
2. Plasmodium: Incorrect choice. Plasmodium is a parasite that causes malaria and is not involved in yogurt production.
3. Yeast: Incorrect choice. While yeast can be involved in the fermentation process of some foods, it is not typically a major player in yogurt production.
4. Pneumococcus: Incorrect choice. Pneumococcus is a bacterium that causes pneumonia and is not relevant for yogurt production.

In summary, the correct answer is Lactobacillus.