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CBSE 12th Standard Biology Subject Evolution Ncert Exemplar 1 Marks Questions With Solution 2021

Published on: 25/05/2021

QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

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Std: 12th Standard CBSE - Biology

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Questions:

1 Marks

9 x 1 = 9

What is the way to compute the age of a fossil?

Name any two breeds of wild rock pigeon that have been developed through artificial selection.

Cite one example of homologous organs in plants.

What is the probable period of origin of cyanobacteria?

When we talk of functional macro-molecules e.g. protein as enzyme, hormones, receptor, antibodies, ect., towards what are they evolving?

Did aquatic life forms got fossilized? If yes, where do we come across such fossils?

What are the characteristics of life forms that had been fossilised?

Who probably did not eat meat among Ramapithecus, Australopithecus and Homo habilis?

By what Latin name, is the first human-like being, the hominid known?

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Answers Key:

1 Marks

9 x 1 = 9

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Radiocarbon dating is one of the way to compute the age of a fossil.

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Pouter, fan tail and jacobin.

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Thorns of Bougainvillea and tendrils of passiflora.

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About 3.3 to 3.5 billion years ago.

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They are evolving towards different functions among diverse organism and evolving into complex organism.

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Yes, the aquatic life has more chances of being fossilised as their dead bodies are buried in the sedimentary rocks. We come across such fossils when the sedimentary rocks are exposed due to drastic changes in the crust of the earth.