Question
Biology Question on biological classification
Which of the following kingdoms has no well defined boundaries?
A
Monera
B
Protista
C
Fungi
D
None of these
Answer
Protista
Explanation
Solution
Although all single-celled eukaryotes (except some unicellular algae, e.g., Chlamydomonas, Chlorella etc., fungi, e.g., yeasts and animals, which are placed in their respective kingdoms along with their closely related multicellular organisms) are placed in Kingdom Protista, yet its boundaries are not well defined.