Question

Which of the following characteristics can be used to classify an organism into a taxonomic domain?
A. Being unicellular or multicellular
B. Mode of reproduction
C. Presence of nucleus in cells
D. Being heterotrophic or autotrophic

Answer 1

Answer:

There are three domains given by Carl Woese and the basis of classification into domains is Option (C) Presence of nucleus in cells.

Archea don't have a nucleus but Eubacteria have a unenveloped nucleus whereas Eukarya have enveloped nucleus.