Which bacteria are responsible for converting milk into curd?

Statement $P$: $LAB$ is used to make bread.
Statement $Q$: $Lactobacillus$ is used to make curd.

The starter or inoculum is added to fresh milk in order to convert milk into curd. The term starter or inoculum here refers to:

Which of the following bacteria is used for the production of Swiss cheese?

Assertion: Yeasts such as $Saccharomyces \text{ } cerevisiae$ are used in the baking industry.
Reason: Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.

Which of the following bacteria causes the fermentation of milk and other plant products?