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Evolution

Question
CBSEENBI12047511
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Darwin in the 'theory of natural selection' states that

  • characters acquired during the life of an individual are inherited by its offsprings

  • environment does not play any role in the evolution

  • natural selection acts on favourable variations, which appear among individuals of a species

  • heritable variations arises through changes in the gene complex of species

Solution

C.

natural selection acts on favourable variations, which appear among individuals of a species

In 1859, Darwin published 'the' origin of species. His views were published in his book Origin of Species by, natural selection. He stated that all living things on earth today are the descendants with modification of earlier species. He also proposed a mechanism natural selection to explain how evolution takes place. Darwin's theory of natural selection state that natural selection acts on favourable variation, which appears among individual of a species.

Some More Questions From Evolution Chapter

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 ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

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