Home
Class 12
BIOLOGY
Assertion Third molars and hairs on body...

Assertion Third molars and hairs on body in humans are examples of atavism.
Reason Atavism is the reappearance of disappeared ancestral characters

A

Both Assertion and Reason are true, but Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true, but Reason is not the correct explanation of Asseration

C

Assertion is true, but Reason is false

D

Asseration is false , but Reason is true

Text Solution

Verified by Experts

The correct Answer is:
D

Atavism is the reppeearance of certien ancestral character , which have either disaaperaed or are reduced . There are present some examples of atavism human bings ciz , the power of moving pinna in some person , greatly developed cannie teet h , exceptionlly long dence hair , short tail in some baies etc . Third mobares and hair on the body are examples of vestigial organs
Promotional Banner

Topper's Solved these Questions

  • EVIDENCES OF EVOLUTION

    ARIHANT NEET|Exercise Chapter exercises (Medical entrances gallery)(Collection of questions Asked in NEET & Various Medical Entrance Exams )|58 Videos
  • EVIDENCES OF EVOLUTION

    ARIHANT NEET|Exercise Chapter exercises (Taking it together) (Assorted question of the chapter for advanced Level Practice )|102 Videos
  • ENVIRONMENTAL ISSUES

    ARIHANT NEET|Exercise Chapter exercises ( C) Medical entrances gallery (Collection of Questions Asked in NEET & in Various Medical Entrance Exams)|97 Videos
  • EVOLUTION OF HUMAN

    ARIHANT NEET|Exercise CHAPTER EXERCISES (COLLECTION OF QUESTIONS ASKED IN NEET &VARIOUS MADICAL ENTRANCE EXAMS)|23 Videos

Similar Questions

Explore conceptually related problems

All of the following are examples of atavism in humans except

Assertion :- Australian marsupials can be taken as an example of adaptive radiation. Reason :- A number of marsupials, evolved from an ancestral stock, but all within the Australian island continent.

Assertion: For biological functions in human body, barium is not required. Reason: Barium is a divalent ion.

Assertion : All microsopic bodies in motion have wave character. Reason : Microscopic bodies have very large mass.

Assertion : Orchis root resembles human hand Reason : Orchis is an example of fasciculated fleshy roots.

Assertion : Atavism is the reappearance of disappeared ancestral characters. Reason : Third molars and hair on body are examples of atavism.

Assertion In mammals, hair covers the entire body. Reason Hairs are not present on palms, soles and some parts of face in mammals.

ARIHANT NEET-EVIDENCES OF EVOLUTION-Chapter exercises (Medical entrances special format questions )(Statement based questions)
  1. Consider the following statements. I. Neoteny. is reproduction of ax...

    Text Solution

    |

  2. Which of the following staten1ents about geological tirne scale are co...

    Text Solution

    |

  3. Choose the true state1nents from the follovving: l. Birbal Sahni is ca...

    Text Solution

    |

  4. Which of the following is Lrue about Archaeopteryx? I. Jaws are modi...

    Text Solution

    |

  5. Fossils are studied for I. tracing evolutionary history of organisms...

    Text Solution

    |

  6. Match the following Columns

    Text Solution

    |

  7. Match the following Columns.

    Text Solution

    |

  8. Match the following Columns.

    Text Solution

    |

  9. Assertion : Ginkgo biloba is living fossil. Reason : Organisms which...

    Text Solution

    |

  10. Assertion : Homologous organs have common ancestry and similar functio...

    Text Solution

    |

  11. Assertion Third molars and hairs on body in humans are examples of ata...

    Text Solution

    |

  12. Asseration Aschaeozoic era contains abundant fossils Reason Life ori...

    Text Solution

    |

  13. Asseration Petrified fossils contains hard parts of orginisms Reason...

    Text Solution

    |

  14. Assertion : Comparative biochemistry provides a strong eviednce in fav...

    Text Solution

    |

  15. Assertion : From evolutionary point of view, human gestation period is...

    Text Solution

    |

  16. Asseration Amphibians have evolved from fishes Reason Archaeopteryx ...

    Text Solution

    |

  17. Assertion During development, general characters appear before special...

    Text Solution

    |