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प्रश्न
How can you determine the age of the fossils?
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उत्तर
The age of fossils is determined by measuring the radioactive elements such as carbon-14, uranium-238, potassium-40, or lead-206 present in the fossil or the surrounding rocks. The rate of decay of these elements helps scientists calculate the fossil’s age accurately.
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संबंधित प्रश्न
What are fossils ?
What is embryology?
Name two organisms which are now extinct and studied from their fossils.
If the fossil of an organism is found in the deeper layers of earth, then we can predict that ______
The fossil trilobite was originally :
(a) an arthropod
(b) an invertebrate
(c) a reptile
(d) an ave
Some of the important fossils which have been studied are those of organisms X, Y and Z. X were marine arthropods which were common between 400 to 600 million years ago. Y were the invertebrate animals (molluscs) with a flat, coiled, spiral shell which lived in the sea about 180 million years ago. Z are the extinct carnivorous or herbivorous reptiles which appeared on the earth about 250 million years ago and became extinct about 65 million years ago. What are X, Y and Z?
List three factors that provide evidences in favour of evolution in organisms and state the role of each in brief.
Birds have evolved from reptiles.
Which organism is considered to be the fossil bird?
Higher Order Thinking Skill (HOT)
Imprints of fossils tell us about evolutionHow?
