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Ethylene - Plant Growth Substances
This hydrocarbon C2H2 is a gas and is unbelievably a small and simple molecule to be accepted as a hormone. Ethylene is not produced by animals. The role of ethylene in the inhibition of growth and in geotropism was observed in 1901. Denny observed that ethylene can promote fruit ripening. Wallace observed the role of ethylene in leaf abscission. Gane noted that ethylene was actually produced by ripening fruit in 1934. Improvement in techniques like gas chromatography had immensely helped us in estimating the minute quantities of ethylene produced in plants.
Nervous System of Echinoderms Previous to studying the nervous system of echinoderms, you have to bear in mind the peculiar organization of these animals. Here as well, the ne
Two homologous human chromosomes have the following structure: where the letters represent genetic markers and the black dot represents the centromere. 1. Diagram the two chromosom
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What are the factors that for influencing photosynthesis also interfere with the gross primary productivity? Mostly water and light, but also mineral salts, temperature and car
"Height" is an example of a gene, but "Short" is an example of...
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