Trees is the type of plants which is larger in size. The taller palms, tree ferms, bananas and bamboos are also trees. A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically contains woody tissue for strength. Most trees it is surrounded by a layer of bark. Below the ground, the roots branch and spread out widely. Above ground, the branches divide into smaller branches and shoots.
Trees usually reproduce using seeds. Flowers and trees may be present, but some trees palms, bananas and bamboo also produce seeds but tree ferns, produce spores instead. Trees play a significant role in reducing erosion and moderating the climate.
They remove carbon dioxide from the atmosphere and store large quantities of carbon in their tissues. Trees and forests provided habitat for many species of animals and plants. Tree provide shade and shelter, timber for construction, fuel for cooking and heating and fruit for food. In parts of the world, forests are shrinking as trees are cleared to increase the amount of land available for agriculture.
Trees have modified structures such as thicker stems. Wood given structural strength to the trunk of most types of tree, this supports the plant as it grows larger. The vascular system of trees allows water, nutrients and other chemicals to be distributed around the plants. Trees are either evergreen, having follage that persits and remains green throughout the year or deciduous shedding their leaves at the end of the growing season and then having a dormant period without leaves.
The roots of the tree serve to anchor it to the ground and gather water and nutrients to transfer to all parts of the tree. They are also used for reproduction, defense, survival and many other purposes. The main purpose of the trunk is to raise the leaves above the ground. It also performs the task of transporting water and nutrients from the roots to the aerial parts of the tree and to distribute the food produced by the leaves to all other including the roots. Leaves are the structures specialized for photosynthesis and are arranged on the tree in such a way to maximize their exposure to light without shading each other.