root hair zone

Ethylene stimulates rooting of cuttings, initiation of lateral roots and growth of root hair..

Roots absorb water from the soil by osmosis or diffusion as the water is in higher concentration in the soil than in the roots. The absorption may take place into the intercellular spaces of the root cells or the root hairs. Root hair..

The entry of water into the root hair dilutes the cell sap. Thus water molecules in root hair increases as compared to adjacent cortical cells. At this stage diffusion pressure deficit (DPD) of root hairs is lower than that of adjacent cor..

Mineral nutrients absorbed from the root has to be carried to the xylem. This transport follows two pathways namely apoplastic pathway and symplastic pathway. In apoplastic pathway, mineral nutrients along with water moves from cell to cell through spaces between cell wall by diffusion. T..

Epiblema is the outermost covering of the root formed by a single layer of compactly arranged, barrel-shaped parenchyma cells. The cells are characteristically thin-walled since they are involved in absorption of water. A cuticle and stomata are absent. Some of the epiblema cells ar..

* Presence of thin walled cells in the epiblema. * Absence of cuticle and stomata. * Presence of unicellular root hairs. * Presence of passage cells and casparian thickenings in the endodermis. * Presence of parenchyma cells in the pericycle. * Presence of conj..

Differences between a Dicot root and a dicot stem - Characters Dicot stem Dicot Root 1. Epidermis a. Nature of the cells Thick walled Thin walled b. Epidermal hairs Present, multi cellular trichomes Present, unicellular root hairs c. Cuticle Present..

Characters Monocot stem Monocot Root 1.Epidermis a.Nature of the cells Thick walled Thin walled b.Epidermal hairs Absent Present, unicellular root hairs c.Stomata Present Absent 2. Hypodermis Present, made up of..

Plants absorb water through the entire surface - roots, stems and leaves. However, mainly the water is absorbed by roots. The area of young roots where most absorption takes place is the root hair zone. The root hairs ..

Just behind the root cap, there is a meristematic zone in which the cells are in a state of active division. The root cap protects the young delicate zone against mechanical injury from contact with hard soil particle..