P-2 Heredity and Evolution — Science STD 10 — Question
Maharashtra BoardEnglish MediumSTD 10ScienceP-2 Heredity and Evolution2 Marks
Question
Vertebrates have been slowly originated from invertebrates.
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Answer
When the carbon dating method was used to assess the age of fossils, it was understood that invertebrates were present on the earth much before the vertebrates.
The fossils of invertebrates are present in lower layers of earth’s strata.
They were seen in Palaeozoic era of geological time period. Vertebrates dominated during Coenozoic era.
Their fossils are seen in the upper strata of the earth’s crust.
The structural complexity also increased in vertebrates. All these facts indicate that Vertebrates have slowly originated from invertebrates.
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