Plant issues - epidermis, palisade mesophyll and spongy mesophyll The structure of a leaf. This layer contains cells with chloroplasts and is a major site of photosynthesis. Hydrophytes (hydro- meaning water) are plants adapted to growing in water. A thin, waxy layer that covers the upper epidermis of the leaf, preventing the loss of water. The structure of a hydrophytic leaf differs from a mesophytic leaf due to selective pressures in the environment -- water is plentiful, … They may either be present as an independent mass of tissue or be linked with other cells in different tissues. ... Spongy mesophyll layer. Together with the palisade, the spongy layer makes up the mesophyll of the leaf. Overview of Spongy Mesophyll The leaf is a vital organ of the plant where most of the functions related to the plant metabolism take place. Hydrophytic Leaf Adaptations. It may be present in one, two, or three layers. ... spongy mesophyll. The palisade parenchyma (also called the palisade mesophyll) aids in photosynthesis and has column-shaped, tightly-packed cells. Plant structures & their definition as described in CliffsNotes. These cells are important constituents of various tissues in plants such as pith, cortex of roots and stems, as well as the mesophyll in the leaves. A group of similar cells that perform the same function. * Nafly Hussain * 2. It may be present in one, two, or three layers. Lower epidermis. These intracellular spaces, along with the moist surface of mesophyll cells, facilitate the exchange of carbon dioxide and oxygen. The palisade parenchyma (also called the palisade mesophyll) aids in photosynthesis and has column-shaped, tightly-packed cells. The broad midrib contains a vascular bundle, distinctly broader than that of stramonium, showing the usual bicollateral arrangement, which is also to be seen … The spongy mesophyll contains calcium oxalate, mainly in the form of single and twin prisms, but clusters and microsphenoidal crystals are also present (Fig. Key Concepts: Terms in this set (36) Tissue. Palisade Mesophyll: Long with many chloroplasts: Main region for photosynthesis. Mesophyll 1. The spongy layer of a leaf is in the center mesophyll, between the palisade mesophyll layer and the lower epidermis of the leaf. The mesophyll of most leaves typically contains two arrangements of parenchyma cells: the palisade parenchyma and spongy parenchyma. The mesophyll of most leaves typically contains two arrangements of parenchyma cells: the palisade parenchyma and spongy parenchyma. Loose tissue beneath the palisade layer of a leaf; has many air spaces between its cells. Mesophyll is the material that m akes up the majority of a plant's leaves. Spongy cells of the leaf are loosely packed together and lie between the palisade and the lower epidermis with the air spaces connected to each other and the outside by stomata. How does the structure of the spongy mesophyll contribute to its function? Spongy mesophyll cells are a type of parenchyma cells which is a part of the mesophyll tissue or ground tissue present below the epidermis of leaves in plants. It is a relatively simple organic compound Extremely important and is chiefly responsible for … Tissues, Organs, Structure of a Leaf. Parenchyma cells occur throughout the plant structure. Key Concepts: Terms in this set (10) Cuticle. The air spaces allow gaseous exchange: Vascular Bundles: Leaf vein made up of xylem and … Plant leaves are adapted for photosynthesis, and the exchange of gases required for the process. 26.7B,D). 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