Home > Analyzing the impact of Temperature Variations on the form and function of the heart of Desert animals both ectothermic and endothermic
Analyzing the impact of Temperature Variations on the form and function of the heart of Desert animals both ectothermic and endothermic
This assignment focuses on analyzing the impact of Temperature Variations on the form and function of the heart of Desert animals both ectothermic and endothermic.
Animal Form and Function: Temperature Variations
Related Questions
The answer to these questions should be submitted with your practical report. Answers should be no more than 500 words in total. These answers count as 20% of the mark for the second component of this assessment. For more detail about the weighting of the different assessments, please look at the assessments section on Canvas.
1. Desert animals experience large daily variations in environmental temperature, with high temperatures during the day and low temperatures during the night. What effect do you expect a drop in temperature from 25°C to 0°C would have on the heart rate of an ectotherm (e.g. a lizard) compared with an endotherm (e.g. a fox)? Explain your reasoning.
2a. Calculate the Q10 (see introduction) for the change in heart rate between 0°C–10°C; 10°C–20°C and 20°C–30°C of Daphnia magna. Use the mean heart rate from all the Daphnia measured in the class at each temperature for your calculations. Clearly show your working.
2b. Between which temperatures did the smallest change in heart rate occur? Why?
Animal Form and Function: Temperature Variations
Write-up of Practical Report
The write-up of your practical should be no more than 1500 words (excluding references, tables and figures). You should write the report (including statistical analysis) using the data from the whole class (see next page for guidelines and marking scheme).
In total, the coursework for this module (2000 words) – i.e. the practical report (1500 words) plus the question answers (500 words) – is equivalent to 65% of your final mark. Content: relevant definitions, brief overview of Daphnia and previous related studies. Structure and clarity: link the background information with the experiment. Further, a clear aim linked to the introduction and a hypothesis with a clear direction.
Appropriate selection of statistical test (paired vs. unpaired data; parametric vs. nonparametric tests). Additionally, report the result of the test clearly and fully (P value, value of the test statistics and number of degrees of freedom)
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