The Ginkgo biloba, prominently featured in this image, stands as a testament to the resilience and persistence of nature. Its unique fan-shaped leaves, characterized by radiating veins, mark it as a “living fossil,” a term that reflects its ancient origins and relatively unchanged form over millions of years. These leaves first appeared during the Permian period, a time when the landscape was dominated by coniferous trees and early reptiles, setting the stage for the Ginkgo biloba’s long evolutionary journey. The depiction emphasizes the transition from simpler, primitive leaves to the more specialized flabellate leaves of the Ginkgo, illustrating a significant evolutionary development in plant life.
Ginkgo biloba-like Trees: True Leaves
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Ginkgo biloba-like Trees: True Leaves
270 Million Years Ago (+/- 5 million years)
Efficient vascular networks inside leaves
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Ginkgo represents an ancient seed-plant lineage going back 270 million years ago.
Subject: Plant Evolution.
Ginkgo represents an ancient seed-plant lineage going back 270 million years ago. It is distinguished by its fan-shaped leaves with radiating, dichotomous veins, a durable leaf architecture that has persisted for hundreds of millions of years.
Flashcard.
What is it called when leaf veins repeatedly split into two branches?.
Answer. dichotomous venation.
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