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Biology Data-based Questions - Assignment Example

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"Biology Data-based Questions" paper compares the mean residence time for nutrients in the temperate forest and chaparral, evaluates the relationship between the mean residence time and plant productivity for the different biomes, describes the level of cesium-137 in the Inuit from 1962 to 1965…
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Biology Data-based Questions
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Download file to see previous pages Potassium or K and Calcium or Ca has shown greater Mean Residence Time in rainforest chaparral when compared to temperate forests whereas Phosphorus or P demonstrates maximum variance in Mean Residence Time.

In general, plant productivity and Mean Residence Time are such that one increases whilst the other decreases. In subarctic regions, there is low plant productivity and greater Mean Residence Time.

In tropical forests, the mean residence time of nutrients is influenced by higher temperatures than in subarctic forests. Therefore, there is a vast difference in the MRT of nutrients pertaining to the tropical rainforest and the subarctic forest.

Nuclear fission weapons tests in 1961 released radioactive cesium-137 into the atmosphere, which was deposited in the soil and on the plants. Consequently, the herbivorous caribou showed increased levels of cesium deposits in their bodies. Finally, the Inuit, who feed on the caribou, depicted significant amounts of cesium deposits, due to this food chain.

Some plants synthesize and store proteins in their cells. These are termed as lectins. Lectins deter insects and roundworms from consuming plants. They do this by making the tissues inedible. Crop plants cannot produce lectins; hence some of them have been subjected to genetic modification, in order to make them safe from pests. The content of lectins is more in the GNA varieties in comparison to the Con A varieties.

The levels of control do not show much variance, on using Con A with lower lectin than GNA with higher lectin content. However, it has not been possible to establish any straightforward relationship between the level of control and the lectin content.

The data in the bar chart, which represents that the effects of genetically modified potato plants on protozoa are more significant. This is due to the fact that the percentage of reductions, in respect of protozoa, is higher. ...Download file to see next pagesRead More
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