The following events in the history of life in the proper order:
first prokaryotes, appearance of first vertebrates, appearance of first vertebrates, movement of plants and animals onto land, dominance of dinosaurs and cone-
bearing plants, origin of flowering plants, diversification of mammals, appearance of humans.
Explanation:
The organisms appeared or occurred in the following era tells the sequence of events:
Precambrian: First prokaryotes are found in this era in oceans. They were microscopic bacteria.
Cambrian era: The ancestors of insects appeared in this group as shelled animals like brachiopods.
Ordovician: First marine vertebrates are seen in this era. They were fish and had spinal column. Origin of first vertebrate.
Silurian: First terrestrial plants appeared.
Devonian era: First amphibians came into existence is movement of plant and animals onto the land.
Carboniferous era: reptiles appeared.
Triassic era: Dinasour appeared and small mammals also came.
Jurassic era: dominance of dinosaurs and cone-
bearing plants appeared.
Cretaceous era: origin of flowering plants.
Paleogenic era: Diversification of mammals.
Neogenic era: Appearance of human.
