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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.
Ecological isolation is based on the fact that population shows preference to one habitat over the other. This extensive forests become barriers to the dispersal of organims living
There are different types of insulin available and prescribed by the doctor according to the need of the patient. Insulin is grouped according to the speed of action in the body i.
INTERMEDI A T E FILAMENTS These are non-living structures. Made up of different types of protein eg. Keratin, synemin, desmin and vimentin. These are divided into four
What are the Benefits of migration Eg: Need to leave Alaska due to harsh weather conditions (statement that birds are escaping NZ winter not acceptable). Longer day
Explain the Main Benefits of Canned Foods? The main benefits of canned foods are: (a) They are safe and hygienic and have logically good nutritional value; (b) They are e
You are setting up a PCR reaction. a) The total volume of your reaction is 50 uL. Your stock primer solutions are 25 mM each. You want a final concentration of primer of 1 mM in yo
The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no
Explain Transport proteins in plasma Transport proteins, embedded in lipid membranes, facilitate the import of nutrients into cells or the release of toxic products into the
#question.what are the reason that arthropodans are abundant in nature.
A useful way to grow seeds Tie a piece of cloth over the mouth of an old potted meat jar. Permit extra cloth to hang down the sides and dip in about 2 cm of water contained in
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