Q. 'Slipper animalcule' is the common name for:

Explanation by: Kirti

Paramecium.'Animalcule' is a old term for a microorganism; it just means 'small animal'. Other better-known animalcules include: Amoeba, called Proteus animalcule; Noctiluca scintillans, commonly called the 'Sea Sparkles'; Rotifers, called wheel animalcules, etc. A paramecium is shaped somewhat like a slipper (a soft shoe), so it is called the slipper animalcule.