Answer:
Oldest fossils: The oldest known animal fossils are about 630 million years old
while the oldest known plant fossils are more than 400 million years old.
Diversification: By 500 million years ago, most modern phyla of animals had evolved.
Since their earliest occurrences in the fossil record, vascular plants have diversified tremendously.
Environmental events: Major environmental events may have driven the evolution of animals For example, the Cambrian explosion, which occurred about 540 million years ago, was a period of extreme experimentation and diversity.
Structural changes: Fossils provide evidence of structural changes that have transformed plants over time.
For example, the evolution of leaves, stems, and roots can be traced through the fossil record.
Directional changes: Large-scale evolutionary trends, or directional changes over long periods of time, have been the subject of intensive study and debate in evolutionary science
however, the most reliable demonstration of a trend is one that includes detailed historical information that can be difficult to obtain.