Ginkgo is one of the most distinctive seed plants from an evolutionary perspective. It is the only surviving species of its plant group, known as Ginkgophyta. It is distinguished by its fan-shaped leaves, which feature branching veins that differ from the reticulate venation commonly found in many flowering plants. Ginkgo is a deciduous tree that can grow to considerable heights under suitable conditions. Its leaves turn golden yellow in autumn before falling, making it well known for its ornamental value in gardens and along streets. Reproductive Characteristics Ginkgo is a gymnosperm, and male and female reproductive structures are generally found on separate trees. Male trees produce pollen grains in reproductive structures, while female trees produce ovules that develop into seeds following fertilization. One important characteristic of this plant is that its mature male reproductive cells possess flagella that enable them to move. This feature is relatively rare among living seed plants and helps scientists understand the evolution of reproduction in this group. Evolutionary and Geological Significance Studying Ginkgo and comparing it with its fossil relatives helps scientists understand the history of seed plants and the changes that have occurred in leaf forms and reproductive structures throughout geological time. However, describing Ginkgo as a “living fossil” does not mean that it has remained unchanged or stopped evolving. Modern Ginkgo is the result of a long evolutionary history and is not an exact replica of ancient plants. Ecological Importance Ginkgo is cultivated in many cities because of its ability to tolerate a range of urban conditions. It is also used in studies related to the diversity and evolutionary history of seed plants. Its leaves and seeds are important subjects of botanical research, although care should be taken when handling the fleshy outer layer of the seeds, as it may cause skin irritation. Conclusion Ginkgo represents an important link in understanding the evolution of seed plants. It demonstrates how an ancient plant group can survive to the present day while retaining distinctive anatomical and reproductive characteristics. Al-Mustaqbal University – The First University in Iraq