6MERISTEMATIC TISSUE Types of Meristematic Tissue A plant has two types of meristemApical Meristema) Root Meristemb) Shoot Meristem2 . Lateral Meristema) Cork Cambiumb) Vascular Cambium
71. APICAL MERISTEMApical meristem located at the tips of the stem and it branches as well as the tips of the root and its branches.It provides growth in length.As the stem grows taller, some apical meristem moves upward and some remains in place, between the stem and leaf, where it can form new branches, leaves or flowers.
91.APICAL MERISTEM A)ROOT MERISTEM: Root meristem is composed of delicate cells that need protectionThe root apical meristem is protected by the root cap.Root meristem produces primary tissues that later become the epidermis, cortex, and vascular cylinder of mature plants
172. LATERAL MERISTEM(CAMBIUM) The lateral meristem provides an increase in the width of a plant; this growth is secondary growth, because apical meristem is not responsible for the growth in diameter of plant.Types of lateral meristemA) Vascular CambiumB) Cork Cambium
31Epidermal hairs lower water loss by decreasing the flow of air over the plant surface, which in turn, slows the loss of water from the plant.Glandular hairs prevent herbivores by storing substances that are harmful to insects.Root hairs increase water uptake by increasing the surface area of the cell.
34DIFFERENCES BETWEEN STOMA AND LENTICELS Located in epidermisRegulates its openingGuard cells have chloroplast and make photosynthesisTranspiration and gas exchange occurLENTICELLocated in peridermIs always openHas no chloroplast and does not make photosynthesisGas exchange and little amount of water vapor is given out
35FUNDAMENTAL TISSUE (GROUND TISSUE) Is composed of three tissues:Parenchyma Colenchyma SclerenchymaThese tissues can be distinguished by their cell wall structures.