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The graph shows the effect of air temperature on the internal body temperatures of a bobcat and a snake - Edexcel - GCSE Biology - Question 1 - 2014 - Paper 1
Question 1
The graph shows the effect of air temperature on the internal body temperatures of a bobcat and a snake. **(a)** (i) Calculate the change in the internal body tempe... show full transcript
Worked Solution & Example Answer:The graph shows the effect of air temperature on the internal body temperatures of a bobcat and a snake - Edexcel - GCSE Biology - Question 1 - 2014 - Paper 1
Step 1
Calculate the change in the internal body temperature of the snake between an air temperature of 10 °C and 30 °C.
Answer
To find the change in the internal body temperature of the snake, we first need to identify the internal temperatures corresponding to 10 °C and 30 °C from the graph. Upon examining the graph:
- At 10 °C air temperature, the snake's internal body temperature is approximately 19 °C.
- At 30 °C air temperature, the snake's internal body temperature is approximately 29 °C.
Now, we can calculate the change:
Thus, the change in the internal body temperature of the snake is 10 °C.
Step 2
Suggest why the internal body temperature of the snake has a wide range.
Answer
The internal body temperature of the snake has a wide range because:
- The snake is poikilothermic, meaning it cannot regulate its internal temperature and relies on external environments to maintain its body temperature.
- It does not use homeostasis as mammals do, thus its internal temperature fluctuates significantly depending on the surrounding air temperature.
- Additionally, the snake's internal temperature is dependent on the climate and weather conditions of its habitat.