Home
Class 12
BIOLOGY
[A]: The first life originated was chemo...

[A]: The first life originated was chemoheterotrophic.
[R]: The first life originated in sea water.

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:
B
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

Life originated in the

Sex first originated in

Life originated on our planet

Origin of life occurred in

Biogenesis states life originated from

Which of the following originated first?

Which among the following originated first

Which one is considered the first biological catalyst when life originated on earth ?

Theory of origin of life was proposed by

From evolution point of view , the tissue which originated first was

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. Assertion:Jurassic period is considered as the age of reptiles. Reas...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. [A]: Presence of tail in children is a vestigial character. [R]: T...

    Text Solution

    |

  17. [A]: Mimics are always or more often defenceless. [R]: Mimics are...

    Text Solution

    |

  18. [A]: The process of speciation occurs in allopatric populations. ...

    Text Solution

    |

  19. [A]: The establishment of reproductive isola- tion is an event of biol...

    Text Solution

    |

  20. [A]: Random mutations together with genetic drifts and selection press...

    Text Solution

    |