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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.
Define the Drugs Effects on Excretion? Use of certain drugs can influence the excretion of certain substances. For example, besides their intended increase in sodium excretion,
What are the etiological agents of malaria? The etiological agents of malaria are protozoans of the genus Plasmodium. There are four dissimilar types of plasmodia that cause ma
Q. Explain Culture Characteristics of Molds? The gross appearance of a mold growing on a food often is sufficient to indicate its class or order. Some molds are loose and fluff
how many chromosomes in human
Ecological taxonomy notes
State in detail about the thylakoid membrane The thylakoid membrane contains all the factors associated with the photosynthetic electron transport leading to the generation of
What are sols? A colloidal system in which solid particles are dispersed in a liquid is referred to as a sol, to distinguish it from a true solution. In a true solution, the
Density of Water in Relation to Temperature On cooling, water molecules come closer which makes water dense. It is most dense at 4°C (Figure shown below) but it is still a liqu
What are pleura, pericardium and peritoneum? Pleura are the membrane that hides the lungs and the inner wall of the chest; pericardium is the membrane that hides the heart; per
Vital Signs of clinical evaluation Patient's clinical evaluation starts with the examination of certain vital signs which are: B.P. (Take average of two regarding with atlea
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