Which of the following kingdoms has no well defined boundaries?

Options

A. monera
B. Protista
C. Fungi
D. None of these

Answer

C

Explanation

Although all single-celled eukaryotes (except some unicellular algae, e.g., Chlamydomonas, Chlorell etc. fungi e.g., yeasts and animals, which their closely related multicellular kingdoms along with their closely related multicellular organisms) are placed in Kingdom Protists, yet its boundaries are not well defined.