Discussion
Hay-infusion method is used for the culture of:
Answer: A
Correct answer: Amoeba and paramecium
A hay infusion is prepared by steeping dried hay or grass in water and leaving it to stand. Bacteria multiply on the decaying material and provide food for the protozoa, which appear in succession over days - flagellates first, then ciliates such as Paramecium, then amoebae. It is the standard laboratory method for obtaining both.
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