Answer
Physical states of media are as follows:
1. Liquid: This state is an aqueous solution. It is mostly used for observing biochemical processes.
2. Semi-solid: It is a clot like state but not hard enough to be solid. This state is used for observing motility.
3. Solid state: It is solid at room temperature and is used for growth of microbial colonies. It can also be used for isolation purposes.
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