This unit covers the complex nature of the structure and function of the different organ systems in plants.

1. Root System

  1. Charateristics of Roots
  2. Types of Root Systems
  3. Types of Roots
  4. Regions of Root
  5. Modifications of Roots
  6. Functions of Roots
  7. Primary Structure of Roots
  8. Origin of Lateral Roots
  9. Secondary Growth in Dicot Roots

2. Shoot System

Stem

  1. Characteristics of Stem
  2. Shoot Apex
  3. Types and Modifications of Stem
  4. Functions of Stem
  5. Structure of Stem
  6. Secondary Growth in Stem

Leaf

  1. Parts of Leaf
  2. Venation in Leaves
  3. Types of Leaves
  4. Phyllotaxy
  5. Modifications of Leaves
  6. Functions of Leaf
  7. Internal Structure of Leaf

Flower

  1. Parts of a Flower
  2. Placentation

Fruit

3. Absorption, Transport and Transpiration

  1. Permeability, Diffusion, Osmosis, Plasmolysis
  2. Turgor Pressure
  3. Absorption of Water by Plants
  4. Translocation of Organic Solutes
  5. Transpiration

4. Nutrition in Plants - Mineral Nutrition

  1. Plant and Mineral Nutrition
  2. Essential Mineral Elements for Plants
  3. Role of Micro and Macro Nutrients
  4. Mineral Deficiency in Plants
  5. Uptake of Mineral Elements
  6. Mode of Nutrition in Plants

5. Nitrogen Metabolism

  1. Nitrogen Cycle
  2. Nitrogen Fixation: Biological and Abiological
  3. Biological Fixation of Nitrogen
  4. Nitrate and Ammonia Assimilation by Plants
  5. Amino Acid Synthesis by Plants

6. Photosynthesis

  1. Significance of Photosynthesis
  2. Photosynthetic Pigments
  3. Role of Sunlight in Photosynthesis
  4. Photochemical and Biosynthetic Phase
  5. Biosynthetic Pathway: Dark Reaction
  6. Factors Affecting Rate of Photosynthesis
  7. Chemosynthesis

7. Respiration in Plants

  1. Respiration in Plants
  2. External Respiration or Gaseous Exchange
  3. Cellular Respiration
  4. Rate of Respiration and Factors Affecting It
  5. Pentose Phosphate Pathway or HMP Pathway