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Evolution

Question
CBSEENBI12003190
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Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

  • Development of transgenic animals

  • Production of 'Dolly' the sheep by cloning

  • Prevalence of pesticide resistant insects

  • Development of organs from 'stem cells' for
    organ transplantation

Solution

C.

Prevalence of pesticide resistant insects

According to Darwin's concept of natural selection, the organisms which are provided with favourable variations would survive because, they are the fittest to face their surrounding while the organisms, which are unfit for surrounding variations are destroyed. Prevalence of pesticide resistant insects is due to adaptability of these insects for the changes in environment (due to use of pesticides).

Some More Questions From Evolution Chapter

When did life appear on earth ?

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

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.

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

What are the two key concepts of Darwinian Theory of Evolution

What were the units of life according to the early Greek thinkers ?

Mention the type of nutrition in the cells originated first during the origin of life.

Which group of organisms were responsible for appearance of free oxygen in the atmosphere of the primitive earth ?

What is meant by the term fossil ?

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