Beneath the palisade layer is the b) spongy layer which is, you’ve guessed it…spongy! The Mesophyll is divided into two layers a) The upper palisade layer which is tightly packed. This is where most of the photosynthesis occurs. Mesophyll – This is the interior of the leaf between upper and lower epidermis. It is usually transparent and is waxy to prevent water loss. What are the layers of a leave?Įpidermis – This is the outer layer of cells covering the leaf. Leaves can store food, water and minerals and these are transported through the veins and stem. The petiole attaches to the stem at a point called the leaf axil. In some leaves there is no stipule for example. Small processes located to either side of the base of the petiole are called the stipule. The main flat area is called the blade or lamina. There is awesome variety in leaf structure and some may have all or few of the following parts. Roots are also absorbers of water and minerals from the soil. The Roots – the roots are the plants anchor and hold the plant firmly in the ground. They grow straight up, trail along the ground, climb fences and trees or stay underground. Stems hold up leaves to the light and keep fruits and flowers attached. The Stems – The stems are the plant’s support system. The Leaves – are basically a food making machine. A plant is what the leave is attached to. Many (although not all) plants are green and are part of our ecosystem. What is a plant?Ī living thing that usually can produce its own food, reproduces, and rarely is able to move by itself.
A compound leaf has a fully subdivided blade with is separated by a main or secondary vein. Most leaves are flat to increase absorption from the sun although this is not always the case. Leaves are prominent in the human diet as leaf vegetables like lettuce.You may not realize it but we eat some form of leaf almost every day…well I know I do! What are the types of leaves? The leaf acts almost like a solar panel for attracting energy from the sun. Oxygen is released during this process a process called Respiration. The energy is used to combine water from the soil and carbon dioxide gas from the air to make sugar. In general leaves are green and use the chemical called chlorophyll to trap energy from the sun. A leaf is a flat, thin plant organ that uses the sun to make its own food.
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