Home
Class 12
BIOLOGY
[A]: Homologous organs are similar in ba...

[A]: Homologous organs are similar in basic structure and embryonic origin, but serve different functions.
[R]: Similarity in basic structure points to common ancestry whereas diversity in function reflects adaptation to different modes of life.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Fungi

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|27 Videos
  • GENETICS AND EVOLUTION

    TRUEMAN BIOLOGY|Exercise SECTION-A|34 Videos

Similar Questions

Explore conceptually related problems

[A]: Homologous organs have similar structure but different functions. [R]: It is believed that homologous structures were created for different purposes and their present function is secondarily achieved out of necessity

Organs similar in function but different in internal structure are

Anatomically and structurally different but functionally similar structures are called

Which one of the following groups of structures or organs have similar function

Assertion:Analogous organs serve the same function and look alike, but have different structure and embroyonic origin. Reason:Analogous organs have no specific significance

The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called :

[A]: Homology is the similarity between organs of same animal based on common ancestry. [R]: Analogy is seen in every organ system from fish to man

Mention one structural and one functional differences between sensory and motor neurones. Mention the location and function of 'organ of corti'.

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. [A]: Macro evolution produces groups of parallel special adaptations a...

    Text Solution

    |

  2. [A] : Organisms that bear large number of common amino acid sequence m...

    Text Solution

    |

  3. [A]: Homologous organs are similar in basic structure and embryonic or...

    Text Solution

    |

  4. Assertion:Analogous organs serve the same function and look alike, but...

    Text Solution

    |

  5. Assertion:Frog's tadpole has fish-like form, tail and gills Reason: ...

    Text Solution

    |

  6. Assertion:Jurassic period is considered as the age of reptiles. Reas...

    Text Solution

    |

  7. [A]: Some babies have a small tail. [R]: This is just a freak of ...

    Text Solution

    |

  8. [A]: The first life originated was chemoheterotrophic. [R]: The f...

    Text Solution

    |

  9. [A]: Evolution is a theory. [R]: As it is based on causes and evi...

    Text Solution

    |

  10. [A]: Cabbage, cauliflower, Kohlrabi, Broccoli and Brussels have descen...

    Text Solution

    |

  11. [A]: Evolution is not occurring at present. [R]: Evolution is a v...

    Text Solution

    |

  12. [A]: According to the theory of Lamarck use and disuse caused the incr...

    Text Solution

    |

  13. [A]: Fossils of Peking man were discovered from caves near Peking in 1...

    Text Solution

    |

  14. [A]: Man's most characteristic feature in which it differs from all it...

    Text Solution

    |

  15. [A]: Darwin held that small favourable varia- tions formed the raw mat...

    Text Solution

    |

  16. Assertion : A single mutation may produce a new species . Reason : M...

    Text Solution

    |

  17. [A]: Isolation prevents inbreeding among the otherwise potential mates...

    Text Solution

    |

  18. [A]: lnterspecific mating often produces a more vigorous but sterile F...

    Text Solution

    |

  19. [A]: Basis of adaptation is the pre existing gene mutation. [R]: ...

    Text Solution

    |

  20. [A]: Artitical selection is done only in animal breeding. [R]: Ar...

    Text Solution

    |