II. External Appearance

III. Simple vs Compound Leaves

IV. Patterns of Leaf Arrangement

V. Veins in Leaves

A. Parallel vs Netted Venation

B. Pinnately vs Palmately Net-Veined

VI. Conducting Tissue

A. Xylem and Phloem

VII. Tissue and Cells of Leaves

A. Epidermis

B. Mesophyll

1. Palisade Layer

2. Spongy Layer

C. Bundle Sheath

VIII. The Stoma: Structure and Function

IX. Transpiration

X. Photosynthesis

XI. The Importance of Leaves

A. Oxygen in our Atmosphere

B. Intake of Carbon Dioxide

XII. Human Uses of Leaves

XIII. Conclusion