Fossil X is older than fossil Y. Most evident answer is:
A
Fossil Y has got some of the vestigial organs which are functional in X.
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B
Fossil Y has got homologous and analogous organs of fossil X.
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C
Fossil X is found in deeper sedimentation than Y.
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D
Fossil Y was found in better state than that of X.
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Solution
The correct option is C Fossil X is found in deeper sedimentation than Y. If a fossil is found in deeper sediments then it means that fossil is older as compared to the fossil found nearer the surface. Fossils are formed by deposition of sediments over dead plants and animals. An older fossil can be better preserved than a recent fossil. It depends on conditions at the time of fossilization. Vestigial and homologous or analogous organs are studied in living organisms not fossil.
So, the correct answer is 'Fossil X is found in deeper sedimentation than Y'