Vascular bundles are collateral and closed. 4. With the sharp knife or razor blade (and adult supervision), cut the leaf straight down the center. You can see these if you look at a transverse section (cross-section) of a leaf under a microscope. … These tissues include a mesophyll tissue layer that is sandwiched between two layers of epidermis. Model 2 — Cross Section of the Internal Structure of a Leaf Cuticle Upper epidermis Chloroplast palisade mesophyll Air Space Lower epidermis Vein Spongy mesophyll Cuticle Guard cell f Stoma 8. Cross section of 3-year-old grapevine arm. List the la ers of the leaf starting at the upper cuticle all the way to the … The differentiation of tissues into epider­mal, ground and vascular is clear. Leaf (b) 1. Professional leaf cross-section slides. https://livingthingscells.weebly.com/cross-section-of-a-leaf.html Although a leaf looks thin, its is made up of several layers of cells. The bundle-sheath cells are the photosynthetic cells arranged into a tightly packed sheath around the vein of a leaf. Which life functions are directly regulated through feedback mechanisms associated with the actions of the structures labeled X? Absence of cambium. 623): Next to this cut, make a thin, vertical slice-as thin as possible-of the leaf. The structure of a leaf has adaptations so that it can carry out photosynthesis effectively. Running through the petiole are vascular bundles, which then form the veins in the leaf. 3. Cross section of a leaf showing parts of a vascular bundle . Stomata on both the surfaces. Thus they do not possess two epidermal layers. Procedure: Remove a leaf from the plant and place it flat on the table. Leaf tissues are composed of layers of plant cells. Leaf Cross Section Showing Tissues and Cells. Epidermis Many vascular bundles are arranged parallaly. 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