Cell is a compartment where all the activities of life takes place. Pairs of these cells containing chloroplasts are found on the lower epidermis of the leaf and are responsible for forming stomates. The Palisade cells have lots of chloroplasts in them to help with the process of photosynthesis. It consists of the upper and lower epidermis, which are present on either side of the leaf. Key Concepts The External Structure of a Leaf The typical leaf consists of a flat lamina (leaf blade) at is attached to the stem by means of a petiole The veins of the leaf blade consist of … By means of labelled arrows drawn on the diagram above, show the pathway taken by each of the two raw materials to a cell in the centre of the leaf. Show with another labelled arrow the direction the energy comes from. The cells are at the top of the leaf packed in closely. The cuticle helps retain water inside the leaf cells. Leaf Structure and Function. The epidermis houses the guard cells which regulate the movement of water into and outside the cell. The outermost layer of the leaf is the epidermis. Epidermis: It is the outermost layer and secretes a waxy substance called the cuticle. Internal structure of a leaf 10. Function of the waxy cuticle: prevents loss of water 11. Let us make an in-depth study of the structure and functions of cell. Botanists call the upper side the adaxial surface (or adaxis) and the lower side the abaxial surface (or abaxis). During the day these cells produce sugar by photosynthesis, causing their walls to curve inward and away from each other and creating a space between the cells called a … Give "one word names" for the processes by which these raw materials move across the leaf, as seen in the diagram. Structure and Components of a Human Cell. A diagram of a plant cell with the organelles labeled. Consider how the leaf is adapted to photosynthesis, gaseous exchange and transport. Leaf: Definition, Characteristics and Functions (With Diagram to allow a lot of light to pas through 12. 33)Knowledge of Plant Cells a) Water storage? The epidermis aids in the regulation of gas exchange. After reading this article you will learn about: 1. a) Large Vacuole b) Sugar destination? The plant cell has many different features that allow it to carry out its functions. c) Structure and strength so leaf is lifted up toward the light Why are epidermal cells transparent? Structure of a leaf (Source: Wikipedia) Each leaf consists of the following layers. Comparison of Prokaryotic Cells and Eukaryotic Cells and 2. FUNCTIONS OF LEAF TISSUES AND CELLS Leaves of angiosperms (flowering plants) are flattened to make the most … Each of these structures, called organelles, carry out a specialized role. Parts of a Plant Cell. b) Go to mitochondria (energy) c) Cell wall function? 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