Siemenkasveilla

Siemenkasveilla, also known as seed plants, are a group of vascular plants that produce seeds. They are one of the two major groups of land plants, the other being the non-seed plants. Seed plants are characterized by their ability to produce seeds, which are reproductive structures containing an embryo and a food supply for the developing embryo. This adaptation allows seed plants to reproduce without the need for water, making them well-suited to a wide range of environments.

Seed plants are further divided into two main groups: gymnosperms and angiosperms. Gymnosperms, which include conifers, cycads, and ginkgos, produce seeds that are not enclosed within a fruit. Angiosperms, on the other hand, produce seeds that are enclosed within a fruit, which provides additional protection and support for the developing seed. Angiosperms are the most diverse group of plants, with over 300,000 known species.

The evolution of seed plants is thought to have occurred around 360 million years ago, during the Devonian period. The development of seeds allowed plants to colonize new environments, such as dry land and open forests, and to diversify into a wide range of forms and functions. Today, seed plants play a crucial role in ecosystems around the world, providing food, shelter, and other resources for a vast array of organisms.