Question

Both prokaryotic and eukaryotic fossils are found in:
(A) Azoic
(B) Cenozoic
(C) Proterozoic
(D) Archaeozoic

Answer 1

Hint: Organisms are divided into prokaryotes and eukaryotes on the basis of their nucleus and their cellular makeup. Organisms which have a well-defined nucleus with the proper nuclear envelope are eukaryotes and on the other hand, the organisms which do not have a well-defined nucleus are called prokaryotes.

Complete step by step solution:

The preserved remains, or traces of remains, of extinct animals, are called fossils. They're stones. A full organism or only a portion of one can be preserved as a fossil. Leaves, feathers, shells, bones, and shells can all turn into fossils. The remains of deceased plants and animals that once roamed this planet in the distant past are known as fossils. When dead organisms are not completely degraded by nature, fossils typically form.
Different eras on the geological time scale are Azoic, archeozoic, proterozoic, Mesozoic and Cenozoic. Prokaryotic cells are thought to have initially formed about 3.8 billion years ago.
The earliest fossilized eukaryotes are thought to have existed around 2.7 billion years ago. Eukaryotes are thought to have diverged from prokaryotes between 1.5 and 2 billion years ago, according to fossil evidence.
 The Archean Eon, which lasted from 4.6 billion to 541 million years ago, is the time frame in which the first signs of life on Earth first appeared. Particularly, the earliest fossilized eukaryotic organisms arose about 2.7 billion years ago.
So, option (D) is correct.
Note: All species are connected and change gradually through time, according to the theory of evolution. In a population that has an impact on an organism's phenotypic (physical) features.