10. Some investigators predict that the continued use of chemical fertilizers will have the long-term effect of changing nutrient ratios in aquatic systems. Specifically, they predict that the ratio of phosphorus to nitrogen will increase and the ratios of both nitrogen and phosphorus to silica will increase. Based on your experiments, which of the following would be the most likely outcome of this shift in nutrient ratios?
A) Diatoms will the be least favored, but insufficient information is provided to determine weather green algae or cyanobacteria will be favored
B) Cyanobacteria will be favored over green algae and diatoms, but insufficient information is provided to determine weather green algae or diatoms will be favored
Ans- B Cyanobacteria will be favored over green algae and diatoms, but insufficient information is provided to determine whether green algae or diatoms will be favored
This is because nitrogen and phosphorus ratio has being thought to be significantly increased due to continued use of chemical fertilizers. Cyanobacteria grows well in nitrogen and phosphorus rich environment. Not in excess that they can use nitrogen for nitrogen fixation but under normal high conditions they show beautiful growth. Green alage doesnot use nitrogen and phosphorus as such. Some microalgae use silica and diatoms as well. So it is not defined properly that which group is favoured. The favoured group depends upon the production of compounds that are beneficial for their growth and normal productivity.
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10. Some investigators predict that the continued use of chemical fertilizers will have the long-term effect...
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