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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.
Define the Features of Cladosporium? Identifying Features of Cladosporium: 1. Colonies are small, heaped, powdery and greenish black in colour. 2. Mycelium is septate and
Define the Requirements for Water? The body has no provision for water storage; therefore the amount of water lost every 24 hours must be replaced to maintain health and body e
Care of Psychoemotional Aspects ICU area is an area which is cut off from outside world. Modem ICUs are built in such a way that the sensory deprivation is reduced. Ta
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If a person lying quite still why does he or she need energy for?
Which are the more abundant ribosomes in secretory cells - the free cytoplasmic ribosomes or those associated with the rough endoplasmic reticulum? Free cytoplasmic ribosomes
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Explain the organisation of the intensive care unit? The following kinds of professional groups are required in the day to day functioning of a modern intensive care unit: Th
Does natural selection produce an effect directly on genes, on genotypes, or on phenotypes? Explain please.
Hydrogen bonds are important for all of the following except:: a) Allowing carbohydrates to dissolve in water b) Stabilizing the three-dimensional shape of proteins. c) Ma
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