Why is the waxy cuticle on a leaf? The waxy cuticle prevents the excessive transpiration from the leaves. However, the transpiration, a term for water evaporation from plants, can still occur through stomata. W…ithout cuticle layer, the water will evaporates through the epidermis much more easily.   The transpiration itself is an important factor that drives the water movement inside a plant. As a water in a leaf evaporates, the empty space left in the leaf will pull the water molecules from roots and stem.
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In botany, plant cuticles are protective, hydrophobic, waxy coverings produced by the epidermal cells of leaves, young shoots and all other aerial plant organs. Cuticles minimize water loss and effectively reduce pathogen entry due to their waxy secretion.
https://en.wikipedia.org/wiki/Cuticle
The Cuticle and the Stomata. The cuticle is a waxy, water-repellent layer that covers all of the above-ground areas of a plant. It is secreted by the epidermis, the outer layer of the plant, and covers up any holes or chinks between the cells. This waxy layer keeps all of the plant's valuable water inside where it belongs. However, while the cuticle closes up any areas where the plant could lose water, it also closes up any place that allows the plant to breathe. Remember, plants are the reverse of us; they take in carbon dioxide and release oxygen. Plants rectified this problem through the creation of pores in the leaf called stomata.
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Anatomy of a eudicot leaf. A plant cuticle is a protecting film covering the epidermis of leaves, young shoots and other aerial plant organs without periderm. It consists of lipid and hydrocarbon polymers impregnated with wax, and is synthesized exclusively by the epidermal cells. 1 Description.
https://en.wikipedia.org/wiki/Plant_cuticle
Evolution[edit] The plant cuticle is one of a series of innovations, together with stomata, xylem and phloem and intercellular spaces in stem and later leaf mesophyll tissue, that plants evolved more than 450 million years ago during the transition between life in water and life on land.
https://en.wikipedia.org/wiki/Plant_cuticle
From Wikipedia, the free encyclopedia. A cuticle /ˈkjuːtɪkəl/, or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection. Various types of cuticle are non-homologous, differing in their origin, structure, function, and chemical composition. 1 Human anatomy.
https://en.wikipedia.org/wiki/Cuticle
The plant cuticle is one of a series of innovations , together with stomata , xylem and phloem and intercellular spaces in stem and later leaf mesophyll tissue , that plants evolved more than 450 million years ago during the transition between life in water and life on land. [ 7 ] Together , these features enabled plant shoots exploring aerial ...
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The cuticle is the waxy layer present on all above-ground tissue of a plant and serves as a barrier to water movement out of a leaf. Because the cuticle is made of wax, it is very hydrophobic or ‘water-repelling’; therefore, water does not move through it very easily.
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Rating Newest Oldest. Best Answer: Plant cuticles are a protective waxy covering produced only by the epidermal cells [1] of leaves, young shoots and all other aerial plant organs without periderm.
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The cuticle tends to be thicker on the top of the leaf, but is not always thicker in xerophytic plants living in dry climates than in mesophytic plants from wetter climates, despite a persistent myth to that effect.
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what do waxy cuticles on plants do
Waxy cuticles  are protective, hydrophobic, waxy coverings produced by the epidermal cells of leaves, young shoots and all other aerial plant organs  on plants .