Select the incorrect statement about Mycoplasma.

Consider the following statements.

I. All prokaryotic organism were grouped together under kingdom-Monera.

II. The unicellular eukaryotic organism were placed in kingdom-Protista.

III. Chlorella and Chlamydomonas, both were having cell walls.

IV. Paramecium and Amoeba lack cell walls.

V. Kingdom-Protista has brought together Chlamydomonas, Chlorella with Paramecium and Amoeba. Which of the statements given above are correct?

Primitive nucleus, DNA without histone proteins and absence of membrane-bound cell organelles are the characters of kingdom

Identify the figures, and find out correct options.