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Osmotic Function - Essential Elements
Plant cells generally contain mineral ions 10 to 1000 times higher in concentration than the surrounding soil. That is why water enters the cells by osmosis and builds up turgor. You know that turgor maintains the shape and size of non-rigid plant parts such as leaves. Potassium is a key ion in this respect. Changes in its concentration in guard cells affect turgor and thus result in opening and closing of stomata. Turgor is also essential for the growth of plant cells.
put the following events in the most probable order. A. Dead algae decomposed by bacteria B.excess nitrate and phosphate discharge into rivers C. Fish die of suffocation D.bacteria
What is absorption? Absorption involves the transfer of materials through the mucosa of the alimentary tract into blood and lymph vessels.
Exudate gums Most exudates gums come from compounds produced when the plant is wounded and these substances seal the wound. Most widely used exudate gum is 'gum Arabic' exuded
What is Imbibition The ability of colloids to pick up water and swell when they come in contact with water is called imbibition. Imbibition is usually accompanied by the evo
Hunting and Export - Wildlife The hunting and export of excessive numbers of certain animal species is another important factor leading to dangerous reductions in numbers. The
Explain about the Canning of Food? You must have seen the markets flooded with canned products. Can you name a few of such products? Yes the canned juices, canned aerated drink
DISORDE R RELATED TO NUTRITION AND DIGESTIVE SYSTEM Malnutrition Malnutrition is improper intake of food. Malnutrion covers both undernutrition and overnutrition. Und
Periodic Variations in Light-Diurnal and Seasonal We know that rotation of the earth on its axis accounts for day-to-night variations in the amount of radiations falling at a g
describe the effects of the failure of the pancreas to produce sufficient insulin
What are some diseases or genetic abnormalities caused by dominant genes? Why are severe dominant genetic diseases rarer than recessive ones? Instance of dominant genetic disea
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