Examples of a deciduous tree are ash, beech, birch, maple and oak. Some scientists think that trees can save more water if they lose their leaves. A process called transpiration passes the water through the leaves. The tree has narrow hard leaves. These narrow hard leaves are called needles or scales.
Most conifers are evergreen and produce cones.
The Palm is classified as a tropical tree. Most leaves have pointed tips. These tips toss off the water. A tree will start to grow from a single seed. Sequoias and the California Redwoods are the tallest trees.