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- A leaf usually has a large surface area, so that it can absorb a lot of light. Its top surface is protected from water loss, disease and weather damage by a waxy layer.
www.bbc.co.uk/bitesize/guides/zb9fy9q/revision/3Adaptations of the leaf - Photosynthesis - 3rd level Science ...
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Water vapour also diffuses out of the stomata. The stomata are surrounded by guard cells, which control their opening and closing. Cells in the leaf are loosely packed.
May 9, 2023 · Lára. Last updated. 9 May 2023. Did this video help you? Structure of the Leaf. Plant leaves have complex structures with layers of different tissues containing specially adapted cells. The table below describes the different structures in a leaf and their functions. Leaf Structures Table. Diagram showing the cross-section of a leaf.
A protective layer called the cuticle covers surface of the epidermal cells (Figure \(\PageIndex{3}\)). The cuticle is rich in lignin (which lends some rigidity) and waxes (which function in waterproofing).
Oct 31, 2023 · The epidermis is usually one cell layer thick. However, in plants that grow in very hot or very cold conditions, the epidermis may be several layers thick to protect against excessive water loss from transpiration. A waxy layer known as the cuticle covers the leaves of all plant species.
Short distance for carbon dioxide to diffuse into leaf cells: Cuticle: A waxy waterproof layer which reduces water loss, it is transparent to allow light through the leaf
Aug 24, 2018 · Epidermis. An epidermal leaf cell is any cell which protects the outside of the leaf. These cells are often short and flattened, much like a square pancake. They form a protective layer over the leaf. They often produce waxy substances which protect the leaf from drying out or being attacked by insects.
Leaf tissue consists of the epidermis, which forms the outermost cell layer, and mesophyll and vascular tissue, which make up the inner portion of the leaf. In some plant species, leaf form is modified to form structures such as tendrils, spines, bud scales, and needles.
