Plant Anatomy and Physiology Diagram
This detailed schematic representation provides a comprehensive overview of plant structure and function, incorporating key elements of plant biology. The diagram illustrates the complex interplay between different plant parts and their roles in sustaining plant life.
The image is divided into two main sections: the above-ground portion (atmosphere) and the below-ground portion (soil). This division helps to visualize the distinct environments in which different plant processes occur.
Vocabulary: Sève brute (raw sap) and sève élaborée (elaborated sap) are highlighted in the diagram, showing their respective pathways through the plant.
The above-ground portion of the plant includes:
- Leaves: Shown as the primary site for photosynthesis, where light energy is captured.
- Stem: Depicted as the main support structure and transport pathway.
- Flowers: Illustrated as the reproductive organs of the plant.
- Buds: Both apical and axillary buds are shown, indicating points of new growth.
Definition: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce oxygen and energy in the form of sugar.
The below-ground portion focuses on the root system:
- Root hairs: Illustrated as fine structures increasing the surface area for water and nutrient absorption.
- Mycorrhizae: Shown as symbiotic fungal associations with roots, enhancing nutrient uptake.
Highlight: The diagram emphasizes the double circulation of sap within the plant, showcasing the intricate vascular system.
Key processes illustrated in the diagram include:
- Photosynthesis: Occurring in the leaves, using light energy, water, and carbon dioxide.
- Water and mineral absorption: Taking place in the roots, particularly through root hairs.
- Sap circulation: Both raw and elaborated sap moving through the plant's vascular system.
Example: The diagram shows how water and minerals (H₂O + Sn) are absorbed by root hairs and transported upwards as raw sap, while elaborated sap (products of photosynthesis) moves throughout the plant.
This comprehensive schematic serves as an excellent visual aid for understanding the complex interrelationships between plant structures and their functions, making it a valuable resource for students studying Schéma plante SVT or plant biology in general.
