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The graph shows the variation in body temperature for two different organisms over a range of ambient temperatures - HSC - SSCE Biology - Question 16 - 2003 - Paper 1
Question 16
The graph shows the variation in body temperature for two different organisms over a range of ambient temperatures. (a) State the term applied to animals that exhib... show full transcript
Worked Solution & Example Answer:The graph shows the variation in body temperature for two different organisms over a range of ambient temperatures - HSC - SSCE Biology - Question 16 - 2003 - Paper 1
Step 1
State the term applied to animals that exhibit the type of body temperature response shown by organism I.
Answer
The term applied to animals that exhibit the type of body temperature response shown by organism I is 'endotherm'. Endotherms maintain a relatively constant body temperature regardless of ambient temperature.
Step 2
Name an Australian native animal that would exhibit a response similar to curve II.
Answer
An Australian native animal that would exhibit a response similar to curve II is the 'red-bellied black snake'. This snake is ectothermic, meaning it relies on external heat sources to regulate its body temperature.
Step 3
Describe how a response by organism II would assist in temperature control when the ambient temperature increases beyond W.
Answer
When the ambient temperature increases beyond W, organism II, being ectothermic, would utilize behavioral adaptations to assist in temperature control. For example, it may seek shade or burrow into the ground to avoid excessive heat. This behavior helps prevent overheating and maintains optimal physiological functioning.