Question

Which statement describes a characteristic shared by all organisms classified within the archaebacteria, eubacteria, and protista kingdoms?

Option 1: They are all multicellular organisms.
Option 2: They all have a nucleus.
Option 3: They are all prokaryotic organisms.
Option 4: They are all autotrophic organisms.

Answer 1

The statement that describes a characteristic shared by organisms in the archaebacteria and eubacteria kingdoms is that they are both prokaryotic. Protists, however, are eukaryotic, thus Option 3, stating they are all prokaryotic, is incorrect since it includes protists.

Step-by-step explanation:

The characteristic shared by all organisms classified within the archaebacteria, eubacteria, and protista kingdoms is that they are all prokaryotic except for protists, which are eukaryotic. The archaebacteria (Archaea) and eubacteria (Bacteria) are unicellular organisms that do not have a nucleus or other membrane-bound organelles. Protists, although often unicellular, are eukaryotic and have a nucleus. Therefore, the correct statement is Option 3: They are all prokaryotic organisms, though this is technically incorrect because protists are not prokaryotic. The correct answer considering all groups would be that there is no characteristic that fits all three kingdoms.