Anatomy of Monocot Stem,Primary structure of stem,Epidermis,Hypodermis,Ground tissue,Vascular system, Procambium, Parenchymatous cells,Cortex, Endodermis, Pericycle

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Morphology of Flowering Plants Morphology of Plants Characteristics of Root Root System Modifications of Root Systems Adventitious Root Roots Modified for Additional Support Roots Modified for Vital Functions Characteristics of Stem Kinds of Bud Modifications of Bud Types of Stems Aerial Modifications of Stem Plant Leafs Shapes of Lamina Leaves Venation Leaves Phyllotaxy Simple and Compound Leaves Functions of Leaves Importance of Studying Leaf Morphology

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Your Ad Here	Anatomy of Monocot Stem (MAIZE) Monocot Stem Diagrammatic T.S of Monocot Stem
Primary Structure of Stem The primary stem consists of following tissue systems: 1. Epidermal tissue system¾developing from Protoderm. 2. Ground tissue system¾developing from ground meristem. 3. Vascular tissue system¾developing from Procambium. The monocot stem shows only primary structure as there is no secondary growth in it. It shows the following tissues: 1. Epidermis It is the outermost single layer of rectangular parenchymatous cells. It is covered with cuticle and has no hairs. Few stomata may be seen. Each stoma has two dumbel shaped guard cells.
2. Hypodermis A few sclerenchymatous cell below epidermis forms hypodermis. It is usually 2-3 layered. At stomatal regions it may be interrupted by parenchyma. It provides mechanical strength and act as heat screen. 3. Ground tissue It extends from below hypodermis upto the centre of stem and is made up of thin walled parenchymatous cells having intercellular spaces. They are smaller below hypodermis and becomes larger towards pith. The cortex, endodermis, pericycle, medullary rays and pith are not demarcated. The vascular bundles are embedded in ground tissue. These cells usually store food but some cells having chloroplast may synthesize food.	Your Ad Here
4. Vascular system Vascular system consists of numerous vascular bundles scattered irregularly throughout the ground tissue. They are smaller towards outside than to inside. Each vascular bundle is round surrounded by a sheath of sclerenchyma called bundle sheath. Each vascular bundle is made up xylem and pholem. The vascular bundles are conjoint, collateral and closed. Pholem lacks pholem parenchyma. Xylem has all the four types and is Y-shaped in structure. It is Endarch i.e. protoxylem lies inside while metaxylem towards outside. On inner side of protoxylem is a water filled cavity called lysigenous cavity formed by disintegration of some protoxylem vessels and parenchyma.

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Anatomy of Flowering Plants Tissue and Meristematic Tissue Classification of Meristematic Tissue Apical Meristems of Stem and Root Permanent Tissue Simple Permanent Tissue Complex Tissues - Xylem Types of Xylum Complex Tissues - Phloem Classification of Permanent Tissue on Basis of Their Functions Types of Vascular Bundles Anatomy of Monocot Stem - Maize, Primary Structure of Stem Anatomy of Dicotyledonous Stem - Sunflower Stem Secondary Growth in Dicot System Origin and Activity of Cambium Origin and Activity of Cork Cambium Heart Wood and Sap Wood Primary Structure of Monocot Root Primary Structure of Dicot Root Secondary Growth in Dicot Roots Origin and Activity of Vascular Cambium Origin and Activity of Cork Cambiums Internal Structure of Dicot Leaf Internal Structure of Xerophytic Leaf Internal Structure of Monocot Leaf - Isobilateral Leaf