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Evolution

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Adaptive radiation refers to

  • adaptations due to geographical isolation

  • evolution of different species from a common ancestor

  • migration of members of a species to different geographical areas

  • power of adaptation in an individual to a variety of environments


B.

evolution of different species from a common ancestor

Adaptive radiation is the development of different functional structures from a common ancestral form.

Adaptive radiation is the development of different functional structures from a common ancestral form.


When did life appear on earth ?

 500 million years ago.

Arrange the following substances in a proper sequence with regard to the formation of chemical constituents at the time of origin of life :

Sugar, methane, nucleic acid and amino acid.


Methane—sugar—amino acid—nucleic acid.

What conditions were created by Miller in his experiment?

Miller  created electric discharge in a closed flask that contained CH4, NH3, H2 and water vapour at high temperature like 800°C

What is the phenomenon called when the original drifted population becomes founders?

Founder Effect.

Give another name for origin of life from non living matter.

Abiogenesis