Gymnosperms are a group of seed-producing plants that do not form flowers or fruits. Instead, their seeds are often exposed on cones or other structures. Common examples of gymnosperms include conifers like pine and spruce trees, which are well-adapted to various environments and can thrive in harsh conditions. These plants are characterized by their needle-like leaves and woody stems, allowing them to conserve water and withstand cold temperatures. Gymnosperms play a crucial role in ecosystems, providing habitat and food for various animals, and are also important for human use, such as timber and paper production.