Question

Members of which domain were thought to be some of the first organisms on Earth, billions of years before the dinosaurs?

A. viruses

B. Eubacteria

C. Eukarya

D. Archaebacteria


need help

Answer 1

D. Archaebacteria is the answer

Answer 2

Ans. (D). Archaebacteria.

Archaebacteria or archaea make a domain of single-celled, prokaryotic organisms. These organisms were the first living organisms with simple, primitive cells, having no true nucleus and other membrane-bound organelles.

These organisms had tolerance for extreme environmental conditions, such as salt lakes and hot springs, where other life-forms could not survive.

Thus, the correct answer is option (D).