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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.
Q. Why is carbon dioxide concentration a limiting factor of the photosynthesis process? And When the carbon dioxide concentration is increased indefinitely is photosynthesis also i
whatis a prokaryotic cell? explain its structure and description with images
Which of the following characteristics is not shared by typical birds and mammals? A) Four chambered heart B) Milk production C) Four limbs D) Endothermy E) Insulating skin structu
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Explain the Observation or Inference for seliwanoff's test? 1. Wine or cherry red colour seen. Wine red colour confirms the presence of a ketose sugar. Note: On overheating
In patients who have not received prior antibiotics and who will ultimately have blood culture positive endocarditis, it is likely that 95 - 100 per cent of all cultures obtained w
have any picture this expiriment at record?
What is a vesicle? A vesicle is a relatively minute intracellular, membrane-enclosed sac that keeps or transports substances
Foods with moderate amounts of protein can be eaten in limited amounts. These foods include grains, bread, pasta, rice, potatoes, corn, and peas. Foods with little or no protein ar
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