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Stems transport liquids
(a) Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red ink and let them stand for various hours. Observe the Stalks carefully. Cut them up into various Short lengths and observe where the ink has moved upward in the stem. Try to pull some of the tubes out of the celery stems.
(b) Cut about 2 cm from the end of the flower stalks of white carnations. The cutting Should be done with a sharp knife and under water. Place the stems with flowers in glasses having different shades of food colouring or coloured ink. Observe after various hours.
Chiasmata formation takes place where crossing over occurs. Here Chromatid segments are exchanged which contributes to genetic variability. The 46 homologous chromosomes arrange at
Antimicrobial Prophylaxis - Controversial The need for prophylaxis in breast surgery, herniorraphy and other "clean" surgical procedures has been controversial. Medical Letter
Q. Clinical Features of tricuspid regurgitation? Patients with severe primary tricuspid regurgitation will have symptoms of fatigue, dyspnoea and effort intolerance, abdominal
Pyruvate Dehydrogenase Complex The Pyruvate Dehydrogenase Complex (PDC) is one of the single central enzymes of aerobic metabolism. After completion of this animation you shoul
Q. Properties of foods? various properties of foods, under which the quality attributes of foods were introduced to you in terms of food quality and its categories as appearanc
what is phylum protozoa
When the level of AMP is high, this shows the requirement for more ATP synthesis. AMP stimulates PFK increases the rate of glycolysis and inhibits fructose 1 and 6- bisphosphatase
Oceanic islands are interesting and somewhat specialised biomes. Islands which have broken away from the main continents have similarity of flora and fauna related to the continent
Enrichment of soil Indirect provision of minerals to grazing livestock includes mineral fertilization of pasture and altering soil pH, however this may not be always feasible
Evolution of vertebrates and invertebrates nervous system
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