What general conclusion can be made about the relative age of a fossil found in a deeper rock layer?
Answer and explanation
Correct answer: It may be relatively older than fossils in upper layers
The governing idea is the principle of relative dating in undisturbed sedimentary layers. In general, lower layers were deposited before the layers above them, so a fossil found deeper is likely to be older than fossils in upper layers. This gives relative, not exact numerical, age. Option A is correct. It says “may” because geological disturbance can alter layer order; B, C, and D are incorrect.
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What is the correct answer to this question?
It may be relatively older than fossils in upper layers
Why is this the correct answer?
The governing idea is the principle of relative dating in undisturbed sedimentary layers. In general, lower layers were deposited before the layers above them, so a fossil found deeper is likely to be older than fossils in upper layers. This gives relative, not exact numerical, age. Option A is correct. It says “may” because geological disturbance can alter layer order; B, C, and D are incorrect.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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