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May 9, 2023 · The table below describes the different structures in a leaf and their functions. Leaf Structures Table. Diagram showing the cross-section of a leaf. The specialised cells in leaves have adaptive features which allow them to carry out a particular function in the plant.
Plant cells, tissues and organs are adapted to their functions. The stem, root and leaves form an organ system that transports substances into, around and out of a plant.
- Cuticle
- Upper Epidermis
- Palisade Mesophyll Layer
- Spongy Mesophyll Layer
- Lower Epidermis
It is the waxy layer of the leaf secreted by the epidermis, a thin layer of leaf present just below the cuticle. It performs the following functions: 1. Preventing excessive water loss from the leaves through transpiration 2. Controlling the exchange of gases such as dioxide and oxygen from the leaf surface Giving mechanical support and thus preven...
It is a thin layer of cells below the cuticle. Mostly they are devoid of chloroplasts and thus do not perform photosynthesis. The upper epidermis performs the following functions: 1. Preventing excessive water loss from the leaves through transpiration 2. Allowing sunlight to pass through the spaces between the cells and thus helping to initiate ph...
It is found just below the upper epidermis and is thus also called the upper leaf cells. They consist of columnar cells arranged vertically beside each other, much like the columns of a building. The columnar cells are tightly packed to maximize the absorption of sunlight. Sometimes it can consist of several layers of cells, particularly in environ...
This layer is found below the palisade layer. Also called the lower leaf cells, the spongy layer consists of irregularly shaped cells consisting of the vascular tissues – xylemand phloem, forming the vascular bundles. The vascular tissues are surrounded by parenchymal pith and collenchymas. The cells contain minute pores called stomata (Singular: s...
It is located on the bottom side of the leaves below the spongy mesophyll layer of cells. Stomata are essential structures in the lower epidermis. There may be up to one million stomata per square centimeter. Each stoma is flanked by kidney-shaped epidermal cells called guard cells. The guard cells control the opening and closing of stoma based on ...
WJEC. Structure of plants – WJEC Leaf structure. Plants adapt in order to efficiently collect raw materials required for photosynthesis. These raw materials must be transported through the...
Dec 2, 2014 · The leaf is the organ in a plant specially adapted for photosynthesis. You need to understand the structure of the tissues in a leaf together with their functions. Upper Epidermis: this is the tissue on the upper surface of the leaf.
Mar 22, 2022 · The xylem is responsible for transporting water and nutrients from the soil to the leaves. The phloem transports sugars from the leaves to all other cells of the plant. The spongy mesophyll layer is just below the palisade mesophyll layer. Its cells are irregularly-shaped and loosely packed.
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The function of a leaf is photosynthesis. Leaves are the source of all of food on Earth. Leaves are adapted in several ways to help them perform their function. Features of leaves. Inside the...
