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Stem - Plant Growth Substances
The role of auxins, cytokinins, ethylene and abscisic acid in controlling the apical bud dominance and lateral bud dormancy (Apical Dominance) are discussed earlier. Auxins also play a role in phototropism, geotropism and other responses of stems. Auxin-cytokinin interaction regulates the differentiation and growth of shoots from callus. Gibberellins stimulate cell division and cell elongation in shoot apices. Gibberellins abolish the dwarfism (rossette conditions) in plants and promote stem elongation.
Gas Exchange Gill surface area must be large enough to provide adequate exchange of gases. Therefore, highly active fish have largest relative gill area. Figure compares highl
Which of the following best compares the results of mitosis and meiosis? Mitosis results in four diploid cells, while meiosis results in two haploid cells. Mitosis results in four
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Please help with the following: a) Draw a diagram (showing all the C and H atoms, and their bonds) for a hydrocarbon with 5 carbons with a double bond between carbons 2 and 3.
A charged particle A exerts a force of 2.39uN to the right on charged particle B when the particles are 12.3 mm apart. Particle B moves straight away from A to make the distance be
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