Question

Terrestrial ecosystems evolved during which geologic period? Silurian, Permian Triassic, Paleogene.

Answer 1

Terrestrial ecosystems evolved during Silurian geologic period.Silurian fossils show evidence the of first signs that life beginning to terrestrial ecosystems and fresh water.It was the third period in the paleozoic Era.

Permian period plant life has ferns and seed ferns,conifers.

Triassic period is the first shortest period of the mesozoic era.Many new species developed.

Paleogene consist some modern conifers and a variety of angiosperms.

So ption ''A'' is the correct answer.