1叶的组成植物的叶一般由叶片、叶柄和托叶三部分组成。叶片是叶的主要部分,大多数叶片是绿色的扁平体,连接叶片和茎的细长柄状部分叫做叶柄;在柄的基部两侧生长的小叶状物叫做托叶。不同植物的叶片、叶柄和托叶形状都有所区别,形态各异。2大小不一植物的叶有大有小,叶片的长度由几毫米到几米不等,不同种类的植物有很大的差异.最大的水生植物叶子应该是王莲的叶子,王莲巨大的漂浮叶直径达2米,上面可以乘载一个小孩。松柏的叶子都属 1 leaf composition Plant leaves generally by the leaves, petioles and stipules in three parts. The leaf is the main part of the leaf, most of the leaf is a green flat body, the slender stem connecting the leaves and stems is called the petiole; the leaflet growing on both sides of the base of the stem is called the stipule. Leaves of different plants, petiole and stipule shape are different, different shapes. 2 different sizes of leaves of plants are large and small, the length of the leaves from a few millimeters to a few meters, different types of plants have great differences.The largest aquatic plants leaves should be the leaves of Wang Lin, Wang lotus floating Leaves up to 2 meters in diameter, can carry a child above. Pine and cypress leaves belong