Conifers are a group of trees and shrubs that belong to the class Pinopsida. They are characterized by their needle-like leaves and produce cones instead of flowers. Common examples of conifers include pine, spruce, and fir trees. These plants are primarily found in temperate and boreal forests around the world. Conifers are important for the environment as they provide habitat for wildlife and help in carbon sequestration. They are also economically significant, as their wood is used for construction, paper production, and other products. Additionally, conifers play a role in landscaping and are often used as ornamental plants.