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The lignified xylem cells are situated towards the upper epidermis and the phloem towards the lower epidermis. In the large veins the vascular bundles are usually surrounded by a bundle sheath.
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www.bcb.uwc.ac.za/Sci_Ed/grade10/anatomy/leaves.htm
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Epidermis (botany) - Wikipedia, the free encyclopedia
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The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and stems. It forms a boundary between the plant and the external world. The epidermis serves several funct...
en.wikipedia.org/wiki/Epidermis_(botany)
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Leaf - Wikipedia, the free encyclopedia
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In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin. There is continued debate about whether the flatness o...
en.wikipedia.org/wiki/Leaf
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(You'll find more more information on the structure and function of stomata in a ). ... Bay leaf (Laurus nobilis) upper epidermis ... Black Eyed Susan; (Thunbergia alata) upper epidermis...
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www.microscopy-uk.org.uk/mag/art97b/epider.html
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DNA damage in the lower epidermis was significantly lower than in the upper epidermis immediately after UV in intermediate (1.4-fold, P<0.05) and in dark (2.5-fold, P<0.01) skin, but not in fair skin, which suggests that the upper epidermis has a photoprotective effect against UV-induced 6,4PP and that this effect is...
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www.fasebj.org/cgi/content/full/20/9/1486
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The study of plant function has a lot of connection to water movement. ..... The layer between the upper epidermis and the vascular tissue is called the ...
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plantphys.info/apworkshop/vegstrucfunc.doc
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opposite to homologous: correspondence in function between anatomical parts of different structure and origin; analogous: exhibit analogy (synonym: similar) ... parenchyma tissue between the upper and lower epidermis of a leaf...
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www.ucmp.berkeley.edu/IB181/VPL/Glossary.html
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The upper epidermis has several functions. It protects against water loss, regulates gas exchange (there are only a few stomata on the uppermost layer of the leaf) and produces the waxy substance that becomes part of the cuticle. The prev...
http://wiki.answers.com/Q/What_is_the_function_of_upper...
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The upper epidermis is reponsible for preventing water loss by evaporation. It does this by having a waxy cuticle on the top of the leaf. The lower epidermis has stomata, which allow gases to enter and leave the leaf as a result of photosyn...
http://wiki.answers.com/Q/The_function_of_a_upper_and_l...
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