PLANT TISSUE

1. MERISTEMATIC TISSUE

1.1. Apical Meristem:Present at tip of root and shoot and increases the length of the stem and root. Primary Growth

1.2. Lateral Meristem:Present at the girth of stem and increases thickness of root and shoot. Secondary Growth

1.3. Intercalary Meristem:Present at the base of node and leaves and increases height.Increasing length of internode and repairing of leaves.

2. PERMANENT TISSUE

2.1. Simple:Made up of only one component

2.1.1. Parenchyma:Thin cell wall.Intercellular Space more.Living tissue

2.1.2. Collenchyma:Made up of cellulose,pectin.Very little intercellular space.Mechanical Support.Flexability.Living tissue.Thick cell wall.

2.1.3. Sclernchyma:Presence of Lignin.Protection to plants.Thick cell wall.No intercellular space.Dead Tissue.

2.1.3.1. Fibres

2.1.3.2. Sclereids

2.2. Complex:Made up of many components.

2.2.1. Xylem:Water and minerals.Uni direction flow

2.2.1.1. Tracheids:Dead

2.2.1.2. Vessels:Dead

2.2.1.3. Xylem Parenchyma:Living

2.2.1.4. Xylem Fibres: Dead

2.2.2. Phloem:Food and minerals.By direction flow

2.2.2.1. Sieve Tubes:Living

2.2.2.2. Sieve Cells:Living

2.2.2.3. Campanion Cells:Living

2.2.2.4. Phloem Parenchyma:Living

2.2.2.5. Phloem Fibres:Dead