Root initiation
Ethylene stimulates rooting of cuttings, initiation of lateral roots and growth of root hair..
Root Pressure
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..
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..Passage of Water in Root or Pathway of Water in Root
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..
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..Ion traffic into the root
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..
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..Anatomy of a Typical Monocot Root
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..
Diagnostic Features of a Dicot Root
* Presence of thin walled cells in the epiblema. * Absence of cuticle, and stomata. * Presence of unicellular root hairs. * Absence of hypodermis. * Presence of passage cells and casparian thickenings in the endodermis. * Presence of uniseriate pericycle made up ..
Dicot root and a dicot stem
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..
Rooting
Naphthalene acetic acid (NAA), indole butyric acid (IBA) and indole acetic acid (IAA) are used to induce rooting of cuttings of woody plants like gua..
Differences between monocot root and monocot stem
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..
Root Formation
IAA stimulates cell division in the pericylce leading to the formation of lateral and adventitious roots. Auxin stimulates formation of new roots, but inhibits the root grow..
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