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Regeneration - Root and Shoot Morphogenesis
Higher plants have three kinds of regenerative activities;
All plants possess inherent ability to regenerate lost parts. For example when a part of mature tissues are removed from stem, the exposed mature cells undergo differentiation, division and re-differentiation to restore the normal pattern. When a branch is cut and wound is made-damaged tissues are cast off and new cells take this place. A wound also results in the formation of a zone of cells that form a thick protective layer. Induction of hormones like auxins and cytokinins that promote cell division is also a reaction to wound and part and parcel of regeneration. Mobilization of nutrients towards the site of injury, synthesis of new hormones, increased cell division and thickening of cell walls etc. are some of the responses and contribute to regeneration.
What is Anatomic concavities Anatomic concavities present in the lingual surface of the mandible, the sublingual fossa anteriorly and the submandibular fossa posteriorly. Norm
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SOIL TEXTURE AND STRUCTURE We have seen that soils are predominantly composed of particles of various sizes derived from the disintegration or decomposition of parent rock materi
Define Major Sources of water - Water Intake? The preformed water that we consume as water or as beverage. This will include both preformed water in fluids and in foods. The am
Q How different are extracellular and intracellular digestion? What is the evolutionary advantage of extracellular digestion? Intracellular digestion is that in which the break
1. Discuss how nursing has changed over the last two (2) decades. 2. Review and summarise the philosophy of your enrolled nurse course and its relevance to your clinical practic
Q. Explain about Microwave irradiation? Most micro-organisms are destroyed by the action of microwave of a frequency of about 2450 MHz and a wavelength of 12.24 cm. The water c
Risk Characterization Risk Characterization : Integration of hazard identification, hazard characterization and exposure assessment into an estimation of the adverse e
Define the Uremia and Nitrogen Disposal? In animals, faecal and renal nitrogen were enhanced and decreased uremia was seen in normal and nephrectomised animals. The mechanisms
What is malnutrition? Malnutrition can be defined as a pathological condition resulting from a relative or absolute deficiency or excess of one or more of the essential nutrien
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