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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 senescence Explain the 'programmed senescence theory' of ageing.
Echocardiography: LV hypertrophy can be identified using M-Mode and 2 D imaging. Indications of myocardial ischemic states and systolic functions can be assessed by studying region
Explain the different types of cells in cell structure ? Types of Cells : Cells can be classified as being either prokaryotic or eukaryotic depending on whether or not a mem
How is light from the sun transformed into chemical energy to be used by the living beings on earth? Light from the sun is transmitted into chemical energy contained in organic
Explain the changes in cell wall and intercellular structure As a result of changes in the cell wall and intercellular structure, all fruits and vegetables undergo softening wh
Food Chain - Ecosystem In a food chain, the food energy is transformed from a given source through a series of species, each of which eats the one before itself in the chain.
Define Iron deficiency anaemia During pregnancy? Iron deficiency anaemia (microcytic hypo chromic anaemia) is widespread among adolescents and young women during their reproduc
Amniocentesis is a way of prenatal testing in which the amniotic fluid is withdrawn from the uterus by the help of a needle. The fluid and the fetal cells it contains are analyzed
Provide a link to the graph, describe the variables, and interpret the meaning of the graph
general characteristics
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