Which of the following is not true of organisms in the kingdom Monera? 

Monerans do not reproduce by mitosis. Rather they reproduce by amitosis (binary fission). Mitosis is observed in most eukaryotes. 

(1) The earliest evidence of life on Earth comes from fossilised microbial mats, which are approximately 3.5 billion years old. These mats contain the remains of bacteria-like organisms, which are considered to be among the earliest life forms. 

(2) Monerans lack well defined nucleus and membrane bound cell organelles and they have prokaryotic cellular organisation. 

(3) Monerans may be autotrophic orheterotrophic in nature, though most of them are heterotrophic in nature.