Why dont we know what many ancient plants look like?

Answer 1

Because plants are very sensitive to temp, presure, and many other factors. Therefore many plants would be stomped on or die and wither before they could fossilize

Answer 2

Many ancient plants did not have the same preservation conditions as animals like dinosaurs, making it difficult to find well-preserved plant fossils. Additionally, plants are more delicate and decay faster than animals, making their fossilization less common. The lack of plant fossils also contributes to our limited understanding of ancient plant species and their appearance.