In which kingdom did Whittaker classify non-nucleated organisms?

Gas vacuoles are found in:

The non-nucleated,unicellular organisms of Whittaker's $(1969)$ classification are included in the kingdom

The given characters are seen in which of the following group?
$(i)$ Unicellular,colonial,filamentous,symbiotic or free living.
$(ii)$ The colonies are surrounded by a gelatinous sheath.
$(iii)$ Some can fix atmospheric nitrogen in specialized cells called heterocysts.
$(iv)$ They often form blooms in water bodies.

Pick up the wrong statement.

The habitat of $E. coli$ is