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cuticle

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13y ago

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What is the skin on a leaf called?

The outer layer of a leaf's skin is called the waxy cuticle, or just cuticle. You could also include the next layer, the epidermis layer. Mostly, though, the leaf's skin is called the 'Leaf surface'.


What are the five main functions of a leaf and what is each part's function?

Lower epidermis - outmost tissue on the lower side of the leaf; protects the leafUpper epidermis - outmost tissue on the upper side of the leaf; protects the leafPalisade layer - rows of elongated cells in the upper center of leaf; site of photosynthesisCuticle - waxy layer on the covering the epidermis; holds in moisture, prevents loss of waterStoma - opening between the guard cells; allows for gas exchange and water evaporationGuard cells - surround the stoma; control the opening and closing of the stomaVein - supply support for the leaf; contain the xylem and the phloemSpongy layer - irregular shaped cells in lower center of leaf; absorbs gas & some waterAir space - space in the spongy layer; contain gasesXylem - found in the vein; transports minerals and water from roots to shootsPhloem - found in the vein; transports sugar & other products of photosynthesis from leaves to other parts of the plantChloroplast - cells in the leaves that contain chlorophyll; trap light energy and convert it to chemical energyMesophyll - all of the middle tissue of the leaf


How does CO2 get to the leaf?

(brooke,13) water is soaked up through roots & carbon dioxide is just absorbed Carbon dioxide is absorbed by the following process. There is a spongy mesophyll, a loose tissue with many air spaces between its cells. These air spaces connect with the extrerior through stomata porelike openings in the underside of the leaf that allow carbon dioxide and oxygen to diffuse into and out of the leaf.


Why a cuticle is absent in piliferous layer?

because cuticle is waxy layer


Why do so many plants like the aloe have waxy surfaces?

because it is the cuticle