OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Ancestral giraffes with necks slightly longer than other got more food and left more surviving offspring
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A creator designed it that way
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Its ancestor stretched their necks to get food.
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None of the above
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Detailed explanation-1: -According to Lamarck, the giraffe got its long neck because its ancestors stretched theirs to eat leaves that were just out of reach. This stretching of the neck was passed on to their offspring, over generations, until it reached its current length.
Detailed explanation-2: -Charles Darwin was the first to propose that giraffes evolved into the elegantly long-necked creatures they are because successive generations realised that extra vertebrae helped them get access to tender leaves on top of trees.
Detailed explanation-3: -A Darwinian theory of evolution posits that it was through random variation that some giraffes had longer necks than others. Thanks to their long necks, they were able to reach leaves high up in the trees in their environment.