This consists of one or more layers of cylindrical cells oriented with their long axis perpendicular to the plane of the leaf. The spongy mesophyll is found towards the lower epidermis. But unlike other dorsiventral leaves, palisade cells occur here both towards upper and lower epidermis and spongy cells are located in between them. 11. The ground tissue system, the mesophyll, is divided into two regions: the palisade parenchyma, located beneath the upper epidermis and composed of columnar cells oriented perpendicular to the leaf surface, and spongy parenchyma, located in the lower part of the leaf and composed of irregularly shaped cells. 10. Spongy mesophyll. 2. Palisade mesophyll. (b) (bottom) These leaf layers are clearly visible in the scanning electron micrograph. Beneath the upper epidermis is a layer of elongated cells full of chloroplasts. The mesophyll region lies directly below the cuticle and the upper epidermis of the leaf. Upper cuticle and Upper epidermis List at least 3 differences between the cells of palisade mesophyll and the cells that make up the other areas within the leaf Through which layer does light energy travel to reach the palisade mesophyll? In angiosperm: Leaves. Palisade layer. Palisade parenchyma definition, the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of … 2. These cells interrupt the palisade layers and are said to be the extensions of the bundle sheath. 3. Whats people lookup in this blog: masuzi. Cells compactly arranged at right angle to the epidermis. A waxy cuticle covers all aerial surfaces of land plants to minimize water loss. The mesophyll layer is made up of the palisade cell and spongy parts. It consists of palisade and spongy cells. The cells are filled with chloroplasts (usually several dozen of them) and carry on most of the photosynthesis in the leaf. On the adaxial side palisade cells occur in three or more layers forming a compact zone of columnar cells with little intercellular spaces. 1. The spongy mesophyll consists of air spaces that aid in the diffusion of gases. The palisade layer is found below the upper epidermis. Cells are with large inter cellular space. These cells possess large concentration of … The mesophyll has two layers: an upper palisade layer and a lower spongy layer. The palisade layer of the leaf consists of orderly arranged cells. The palisade layer contains most of the chloroplast in the cell. Some other structures found in a leaf are the lower epidermis, stomata, vascular bundle and guard cells. Stomata on the leaf underside allow gas exchange. Spongy parenchyma region is present just below the palisade and extends upto the lower epidermis. 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