The palm tree was considered to be broad leaved like deiciduous trees, but with bigger leaves, so the palm values are assumed to be 150% of the deciduous values.
As explained by Elmcare.com, trees are scientifically divided into two major categories: "angiosperms" and "gymnosperms".
Angiosperms are flowering plants and their seeds are encased in a protective ovary. This division contains the larger number of species can be further subdivided into dicots and monocots. Dicots have two seed leaf structures and include many broadleaf trees such as the elm, maple and oak. Monocots have one seed leaf structure and include species such as the palm.
Gymnosperms, on the other hand, do not produce flowers. Their seeds have structures such as cones, rather than a protective ovary. Conifers (needle-leaf trees) are a major group of gymnosperms.
Trees can also be divided into deciduous and coniferous categories. Deciduous trees are also known as broadleaf trees because the leaves are generally larger and wider than those of conifers. The larger leaf size means a greater surface area for photosynthesis, but it also mean the leaf is too fragile to withstand winter conditions. Therefore, most deciduous trees drop their leaves in autumn.
Coniferous trees keep their leaves throughout the year, shedding only the oldest leaves. Usually these leaves are lower down on the tree and do not receive as much sunlight as newly developed leaves higher up. Some of the best-known members of the conifer family are pines, spruces, firs, and hemlocks.
According to the New World Encyclopedia, palms are the third largest tree group. They are also a type of angiosperm or flowering plant, and specifically Monocotyledons or monocots, meaning they have one cotyledon, or embryonic leaf, in their seeds (unlike Dicotyledones, which typically have two cotyledons). They grow mostly in the tropics and are distinctive for lack of branches and the large leaves growing directly from the top of the trunk, as well as for growing new material inward.
Tip! Learn How To Take Care Of Palm Trees Outdoors at Gardening Know How.