A. They are multicellular
B. They have a nucleus
C. They are unicellular and lack a nucleus
D. They have cell walls made of cellulose
Answer: They are unicellular and lack a nucleus
What is the main distinguishing feature of members of the kingdom Monera?
Additional Information: Monera consists of unicellular organisms that lack a nucleus and include bacteria and archaea.
Subjects: Biological Classification, Biology