Q: 23 (SSC/0)
question_subject:
Science
question_exam:
SSC
stats:
0,23,11,23,1,5,5
keywords:
{'long necks': [1, 0, 0, 0], 'giraffes': [1, 0, 2, 1], 'evolution': [1, 0, 1, 0], 'darwin': [4, 0, 0, 0], 'tall trees': [1, 0, 0, 0], 'african savannah': [1, 0, 0, 1], 'leaves': [0, 0, 1, 3], 'advantage': [1, 0, 0, 5]}
According to Darwin`s Theory of Evolution, the long necks in giraffes are believed to have arisen because of a constant attempt to reach leaves on tall trees, generation after generation. Option 1 correctly explains this concept. The theory suggests that giraffes with slightly longer necks had an advantage in reaching higher leaves for food. These giraffes were more likely to survive and reproduce, passing on their longer neck trait to future generations. Over time, this led to the evolution of giraffes with even longer necks. Option 2 is incorrect because the long necks do provide an advantage in finding food. Option 3 correctly states that giraffes with longer necks have a survival advantage, and option 4 is not supported by the theory.