Chlamydomonas, Chlorella, Paramecium and Amoeba are placed in which kingdom of  Whittaker’s classification?

According to Whittaker, Kingdom Protista has brought together Chlamydomonas, Chlorella (earlier placed in Algae within Plants and both having cell walls) with Paramoecium and Amoeba (which were earlier placed in the animal kingdom which lack cell wall).