28363C

28363C
Caption: Rosemary leaf cross section (Rosmarinus officinalis). A thin waxy cuticle is present on the upper and lower surface of the leaf. The rectangular line of cells near top of the leaf (right below the cuticle) is the leaf epidermis containing epidermal cells (without chloroplasts). The cuticle and epidermis helps to protect the leaf. The leaf interior contains mesophyll parenchyma cells that consist of two types 1) palisade mesophyll, oblong cells near the upper epidermis arranged perpendicular to the epidermal cells and 2) spongy mesophyll, (not visible in this image). The packed palisade mesophyll cells contain chloroplasts that are the major leaf sites for photosynthesis. The spongy mesophyll cells are loosely packed, with few chloroplasts and are more involved with gas exchange.
Magnification*: x220
Type: SEM
Copyright 2008 Dennis Kunkel Microscopy, Inc.
Keywords: 12.01.08,herb,herb leaf,rosemary,rosemary leaf,rosemary plant,Rosmarinus officinalis,28363C,plant leaf,cellulose wall,palisade mesophyll,parenchyma cell,photosynthesis,plant,plant cuticle,plant epidermal cell,plant epidermis,plants,spongy mesophyll,waxy cuticle,leaf,SEM,plant cell,cell wall,leaf parenchyma,leaf surface