Upgraded B002 Ntbi1001 Root Cross Section Forced — a labelled NEET Biology diagram with a definitions lexicon.
Diagram showing the root cross-section and the forced transition from apoplast to symplast. Labelled parts: Casparian Strip, Plasma Membrane, Cross-section, Plasmodesmata, Endodermis, Cell Wall, Cytoplasm, Cortex, Theca, apoplast, symplast, Water Absorption in Roots. A band of cell wall material deposited in the radial and transverse walls of the endodermis, chemically different from the rest of the cell wall. A selectively permeable biological membrane composed of a phospholipid bilayer with embedded proteins that regulates the entry and exit of molecules. FYI: The Fluid Mosaic Model, proposed by Singer and Nicolson, is the most widely accepted description of its structure. A diagrammatic view of an organ or tissue obtained by cutting it at a right angle to its longitudinal axis. FYI: Transverse sections (T.S.) are standard in plant anatomy to study the arrangement of vascular bundles. Microscopic channels that traverse the cell walls of plant cells, enabling transport and communication between them. FYI: In C4 plants, C4 acids move from mesophyll to bundle sheath cells via plasmodesmata. The innermost layer of the cortex surrounding the vascular cylinder (stele). It regulates the movement of water and solutes into the vascular tissues. FYI: The endodermis contains the Casparian strips, waxy bands that force water to pass through the cell cytoplasm, making the plant apoplastic pathway difficult. A rigid outer layer found in plant cells that provides structural support and protection. The jelly-like substance between the nucleus and the plasma membrane that contains organelles and is the site of most metabolic reactions. FYI: The fluid portion of the cytoplasm, excluding the organelles, is specifically called the cytosol. The tissue layer in plant stems and roots located between the epidermis and the vascular cylinder, primarily used for storage. FYI: In many plants, the innermost layer of the cortex is the endodermis, which contains the Casparian strip. Armored cellulose plates found on the cell wall of Dinoflagellates. apoplast is a labeled feature or concept in this upgraded BioAtlas image: A detailed, labeled diagram of a root cross-section. Must clearly show water moving through the cortex (apoplast) until it hits the endodermis, where the Casparian strip forces... symplast is a labeled feature or concept in this upgraded BioAtlas image: A detailed, labeled diagram of a root cross-section. Must clearly show water moving through the cortex (apoplast) until it hits the endodermis, where the Casparian strip forces... Water Absorption in Roots is a labeled feature or concept in this upgraded BioAtlas image: A detailed, labeled diagram of a root cross-section. Must clearly show water moving through the cortex (apoplast) until it hits the endodermis, where the Casparian strip forces...