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Restricting water loss and preventing disease
- The cuticle is a protective waxy coating of cutin on epidermis cells, restricting water loss and preventing disease.
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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 · 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.
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.
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).
cuticle The outer layer of a leaf which protects it. – a protective layer that allows light to enter the leaf. It is waterproof in order to prevent water loss by evaporation. Epidermis ...
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.