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The cross-section of a barley root. Root morphology is divided into four zones: the root cap, the apical meristem, the elongation zone, and the hair. [4] The root cap of new roots helps the root penetrate the soil. These root caps are sloughed off as the root goes deeper creating a slimy surface that provides lubrication.
Lateral Root emerging from the pericycle (blue) in a cross-section of Iris germanico root. Lateral roots, emerging from the pericycle (meristematic tissue), extend horizontally from the primary root (radicle) and over time makeup the iconic branching pattern of root systems. [1]
Cross-section of a flax plant stem: 1. Pith 2. Protoxylem 3. Xylem I 4. Phloem I 5. Sclerenchyma 6. Cortex 7. Epidermis. In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. [1]
Ranunculus Root Cross Section. The endodermis is the innermost layer of cortex in land plants. It is a cylinder of compact living cells, the radial walls of which are impregnated with hydrophobic substances (Casparian strip) to restrict apoplastic flow of water to the inside. [1] The endodermis is the boundary between the cortex and the stele.
Cross section through a soybean root nodule. The bacterium, Bradyrhizobium japonicum, colonizes the roots and establishes a nitrogen fixing symbiosis. This high magnification image shows part of a cell with single bacteroids within their symbiosomes. In this image, endoplasmic reticulum, dictysome and cell wall can be seen.
The stem anatomy of ferns is more complicated than that of dicots because fern stems often have one or more leaf gaps in cross section. A leaf gap is where the vascular tissue branches off to a frond. In cross section, the vascular tissue does not form a complete cylinder where a leaf gap occurs.
A sclereid which contains a druse and has the lignin deposited excentrically on the cell wall to form a cup shape, or in cross-section, a ∪-shape. crown See canopy. cross To make something interbreed; the act of hybridization. cruciform Cross-shaped. crustaceous Hard, thin and brittle. crustose Forming a closely applied surface layer or crust ...
Cross section of collenchyma cells Collenchyma tissue is composed of elongated cells with irregularly thickened walls . They provide structural support, particularly in growing shoots and leaves (as seen, for example, the resilient strands in stalks of celery ).