Labeled Diagram of a Leaf Game Quiz - A plant’s leaves soak up sunlight to use as energy for photosynthesis, a process in which carbon dioxide and water are converted into glucose and oxygen. Leaves are usually green due to the substance which absorbs light energy, a green fluid called chlorophyll.
As a plant organ, leaves are divided into three main parts – the petiole, leaf base, and lamina (leaf blade).
The stalk that attaches the leaf to a plant’s stem is called the petiole. It allows the leaf to stay upright and provides stability. The petiole is composed of vascular tissues. These tissues supply the leaf with water and nutrients from the roots. In turn, glucose is exchanged to feed the plant.
The leaf base is the section of the leaf blade nearest to the petiole. It helps the leaf stay attached to the stem and protects the axillary bud.
The lamina is the thin part of the leaf. It is composed of the leaf apex (tip), leaf margin (edge) and the leaf veins. This part is where most photosynthetic reactions occur. Small holes on the surface – stomata – allow for gas exchange between CO2 and oxygen.
You can use this labeled diagram of a leaf as a visual guide of the structures found in a leaf and their roles in performing photosynthesis.