Upgraded B002 Ntbi0502 Sequence Function Layers Dicot
Upgraded B002 Ntbi0502 Sequence Function Layers Dicot — a labelled NEET Biology diagram with a definitions lexicon.
Diagram illustrating the sequence and function of layers in a dicot root. Labelled parts: Casparian Strip, Cross-section, Endodermis, Epidermis, Pericycle, Cortex, ADH-dependent water reabsorption, Selective Uptake. 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 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. 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. The outermost protective layer of cells in plants, often covered by a waxy cuticle to prevent water loss. FYI: In roots, the epidermis contains specialized extensions called root hairs for water absorption. A layer of meristematic cells located immediately internal to the endodermis. It is responsible for initiating the growth of lateral roots. FYI: The pericycle is the site from which most lateral roots originate, making it vital for root system development. 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. Antidiuretic Hormone (ADH) stimulates the insertion of aquaporin channels into the membranes of the collecting duct and late DCT. This increases the permeability to water, allowing it to be reabsorbed into the blood. FYI: Low plasma osmolarity (dilute blood) triggers ADH release, leading to maximum water reabsorption and concentrated urine. Selective Uptake is a labeled feature or concept in this upgraded BioAtlas image: Cross-section diagram of a dicot root showing labeled layers: Epidermis, Cortex, Endodermis (with visible Casparian strips), Pericycle. Use arrows to show the forced path of wat...