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Effect of Temperature
Certain plants such as the winter rye (Secale cereale) and the biennial strain of henbane (Hyoscyamus Niger) require exposure to low temperature conditions before they start flowering. A phenomenon known as 'vernalization' or 'Yaronization' was noted by the Russian Plant physiologist Gustav Gussner in 1915. Here also embryo or shoot apex seems to be the site of perception and the role of a hormone 'Vernalin" is suggested. Unfortunately like florigen, vernalin has been still elusive. Gibberellin treatment is known to substitute for cold treatment.
Explain E. coli - Microbiological Study of Water? It is always present in human intestine so its presence indicates the faecal pollution and possible presence of other human or
After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 66.2 m horizontally from the end of the ramp. His velocity, just before landing, is 18
Explain risk factor at the global perspective in heart diease? While the risk of Cardio-vascular diseases has been found to be variable in different ethnic groups with the high
Q. How Time affecting taste quality? Time- Time is another factor which affects sensation. Salt on tongue is sensed in a fraction of a second; whereas, bitter things may requir
Q. Define X-Ray Chest and Coronary Angiography? X-Ray Chest It shows cardiomegaly with left ventricle (LV) and left atrium (LA) enlargement. There may be signs of pulmona
Temperature Regulation in Homeotherms Homeothermy is regulation of body temperature by physiological means. The stabilisation of body temperature permits a steady high level
Symbiotic interaction - Biological Stress Presence of symbiotic microorganism can result in differential growth stimulation of those plants which can recognise the beneficial
Q. Can you explain Ventricular Tachycardia? The term is usually reserved for at least four or more beats and modified by the term non sustained. Short runs of non-sustained VT
What is Ventricular Septal Defect (VSD) ? VSD accounts for 15-20 per cent of all CHDs. The ventricular septum may be divided into a small membranous portion and a large muscula
Nitrate Uptake Nitrate must enter the cells before undergoing assimilatory reduction by the joint action of nitrate reductase and nitrite reductase. Cells accumulate NO - 3
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