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Evolution

Question
CBSEENBI12002183
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Which of the following structures is homologous to the wing of a bird?

  • Wing of a moth

  • Hind limb of a rabbit

  • Flipper of whale

  • Dorsal fin of a shark

Solution

C.

Flipper of whale

Wings of bird and flipper of whale are modified forelimbs of the two organisms so have same origin wings help in flying and flippers help in swimming but thus perform the different functions

Some More Questions From Evolution Chapter

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 ?

Name the different eras of geologic time scale.

What is single step large mutation?

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