Biology
Form I
BIO-F1-03
✓ Verified TIE Syllabus
Nutrition in Plants
Detailed study of autotrophic nutrition: external and internal leaf anatomy, the biochemical process of photosynthesis, light and dark reactions, and essential mineral requirements in plants.
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🎯 Syllabus Competencies & Learning Objectives
Key Competencies
- Main: 1.0 Demonstrate mastery of the concepts, principles and processes of Biology
- Specific: 1.1 Describe the physiological, anatomical and ecological processes of living organisms
Specific Learning Objectives
- Define autotrophic nutrition and photosynthesis.
- Write the word and chemical equations of photosynthesis.
- Describe the external and internal leaf adaptations for efficient photosynthesis.
- Explain the role of chlorophyll, light, carbon dioxide, and water in photosynthesis.
- Identify essential macro and micro mineral elements in plants and their deficiency symptoms.
📖 Comprehensive Study Notes Summary
### Photosynthesis
Photosynthesis is the process by which green plants manufacture glucose from carbon dioxide and water using sunlight energy trapped by chlorophyll.
Equation: 6CO2 + 6H2O -> C6H12O6 + 6O2 (in presence of sunlight and chlorophyll)
#### Internal Leaf Structure
1. **Cuticle & Upper Epidermis**: Transparent layer preventing desiccation.
2. **Palisade Mesophyll**: Densely packed cells with high chloroplast density.
3. **Spongy Mesophyll**: Loosely packed cells with large intercellular air spaces for gas diffusion.
4. **Vascular Bundle**: Xylem brings water; phloem translocates sucrose.
5. **Stomata & Guard Cells**: Regulate gaseous exchange and transpiration.
#### Plant Minerals
- **Nitrogen (N)**: Synthesis of amino acids and proteins (deficiency: chlorosis, stunted growth).
- **Magnesium (Mg)**: Central constituent of chlorophyll (deficiency: yellowing between leaf veins).
Photosynthesis is the process by which green plants manufacture glucose from carbon dioxide and water using sunlight energy trapped by chlorophyll.
Equation: 6CO2 + 6H2O -> C6H12O6 + 6O2 (in presence of sunlight and chlorophyll)
#### Internal Leaf Structure
1. **Cuticle & Upper Epidermis**: Transparent layer preventing desiccation.
2. **Palisade Mesophyll**: Densely packed cells with high chloroplast density.
3. **Spongy Mesophyll**: Loosely packed cells with large intercellular air spaces for gas diffusion.
4. **Vascular Bundle**: Xylem brings water; phloem translocates sucrose.
5. **Stomata & Guard Cells**: Regulate gaseous exchange and transpiration.
#### Plant Minerals
- **Nitrogen (N)**: Synthesis of amino acids and proteins (deficiency: chlorosis, stunted growth).
- **Magnesium (Mg)**: Central constituent of chlorophyll (deficiency: yellowing between leaf veins).