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Dissolved oxygen - Aquatic Habitats
Oxygen in the terrestrial ecosystems occurs in the atmosphere along with other gases in a certain fixed concentration however, in aquatic ecosystems it is dissolved in water, where its concentration varies constantly depending on factors that influence the input and output of oxygen in water. In fresh water the average concentration of dissolved oxygen is 0.0010 per cent (also expressed as 10 parts per million or 10 ppm) by weight, which is 150 times lower than the concentration of oxygen in an equivalent volume of air.
A (w+/ w+) red-eyed Drosophila female is crossed with a white-eyed male. Assuming the trait for eye colour is sex-linked, what are the possible phenotypes of the progeny?
Q. What are the major types of animal tissue? The major animal cell tissues are the epithelial tissue, the nervous tissue, the connective tissue and the muscle tissue.
Role of Chemical Factors in Controlling Apical Dominance There were indications about the existence of plant hormones in the last part of 19th century. The plant hormones had
Ablation experiment is an experiment designed to produce an animal deficient in one or the few cell types, in order to study cell lineage or the cell function. The logic is to mak
Q. Which are the three parts of the small intestine? The small intestine is divided into three portions: duodenum, ileum and jejunum. Q. By generally dividing food into car
Spring overturn - Overturn In spring and early summer season the increased solar radiation melts the ice cover, which, as it attains a temperature of 4° Celsius, becomes dense
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Q. Why in bread and cake manufacture are alcoholic fermenting organisms used and not lactic fermenting organisms? Fermentation has the function of making breads and cakes grow
How many of each type of core histone would it take to wrap the entire human genome into nucleosomes? How has evolution solved the problem of producing such a large number of prote
Explain assessment of iron status - Transferrin receptors? Transferrin receptors: As iron deficiency progresses into second stage, the number of transferrin receptors on the ce
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