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AQA GCSE · Question 06.2 · Homeostasis and Response
In the cold winter months, the echidna hibernates. Figure 9 shows that the echidna woke up from hibernation several times. The echidna's body temperature increased to over 30 °C each time the echidna woke up. How many times did the echidna wake up?
In the cold winter months, the echidna hibernates. Figure 9 shows that the echidna woke up from hibernation several times. The echidna's body temperature increased to over 30 °C each time the echidna woke up. How many times did the echidna wake up?
How to approach this question
The question states that waking up involves the temperature increasing to over 30 °C. Look at the graph and count how many times the line goes above the 30 °C mark.
Full Answer
5
Each time the echidna wakes up, its body temperature rises sharply to over 30 °C, creating a peak on the graph. By counting these distinct peaks, we can determine how many times it woke up. There is one peak at approximately 1 week, one at 3 weeks, one at 5 weeks, one at 7 weeks, and one at 9 weeks. This makes a total of 5 times.
Common mistakes
✗ Miscounting the peaks.
✗ Counting the troughs (low points) instead of the peaks.
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