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Evolution

Question
CBSEENBI12003248
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Which one of the following is vestigeal organ of human

  • Hair

  • Intestine

  • Wisdom teeth

  • Muscle of glottis

Solution

C.

Wisdom teeth

Vestigeal organs are present in reduced form and are of no use to the animal in which they are present. Man has 180 vestigeal organs. e.g., nictitating membrane, vermiform appendix, wisdom tooth, muscle of pinna and forhead, mammary glands in male etc.

Some More Questions From Evolution Chapter

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?

Consider a thorn in Bougainvillea and a tendril in cucurbita. Are these two organs homologous or analogous ? Give reason.

Give two examples that represent adaptive radiation.

Which theory attempts to explain to us the origin of universe?

Evolution is a discontinuous process. Is it correct ?

Give the three key factors of the modern concept of evolution.

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