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In 2008, two incomplete, fossilised skeletons were found in cave deposits in South Africa - VCE - SSCE Biology - Question 8 - 2012 - Paper 1
Question 8
In 2008, two incomplete, fossilised skeletons were found in cave deposits in South Africa. The scientists compared the newly discovered bones with those of members o... show full transcript
Worked Solution & Example Answer:In 2008, two incomplete, fossilised skeletons were found in cave deposits in South Africa - VCE - SSCE Biology - Question 8 - 2012 - Paper 1
Step 1
What feature of the A. sediba skeleton allowed scientists to reach this conclusion?
Answer
The feature that allowed scientists to conclude that A. sediba was suited to climbing in trees was its longer upper limbs. This adaptation would enable more effective climbing, much like modern apes, facilitating movement among tree branches.
Step 2
Explain how each of these characteristics may have given A. sediba an advantage over other Australopithecus species.
Answer
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Projecting Nose: The projecting nose could have improved the sense of smell, aiding in foraging and evading predators by providing better olfactory information about the surroundings.
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Precision Grip: The ability to grasp tools or manipulate objects with a precision grip not only enabled the use of tools but also allowed A. sediba to perform complex tasks, enhancing survival by making it easier to gather food and create shelter.