bladbladen
Bladbladen are the lamina or blade of a leaf, the broad, flat portion that carries out photosynthesis and is usually connected to the stem by the petiole. They are the principal surface of a leaf and are distinguished from other leaf parts such as the stem stalk (petiole) and the leaf base. The blade’s primary functions are capturing light for photosynthesis, exchanging gases, and regulating water loss through stomata.
Anatomically, the blade consists of an upper and lower epidermis with a mesophyll layer in between. The
Leaves show considerable variation in blade morphology. Shapes range from lanceolate and ovate to cordate or
Developmentally, blades arise from leaf primordia at the shoot apical meristem and can be modified by environmental