Home
Class 12
BIOLOGY
Assertion :- Colchicing induces polyploi...

Assertion :- Colchicing induces polyploidy
Reason : Colchicine causes disjucation of chromosomes.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion, then mark (1)

B

If both Assertion and Reason are true ,but the Reason is not the correct explanation of the Assertion, then mark (2).

C

If Assertion is true, but Reason is false , then mark (3)

D

If both Assertion and Reason are false. , then mark (4)

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    CENGAGE BIOLOGY|Exercise Archives|38 Videos

  • EVOLUTION

    CENGAGE BIOLOGY|Exercise Archives|38 Videos

  • ENVIRONMENTAL ISSUES

    CENGAGE BIOLOGY|Exercise ARCHIVES|45 Videos

  • HUMAN HEALTH AND DISEASE

    CENGAGE BIOLOGY|Exercise ARCHIVES|45 Videos

Similar Questions

Explore conceptually related problems

Application of the alkaloid colchicine induces polyploidy in plants. Colchicine interferes in organization of spindle fibres.

Assertion :- Colchicine is a mitotic poison. Reason:- Colchicine interferes in the arrangement of spindle fibers .

Assertion : Inbreeding produces pureline. Reason : It causes homozygosity.

Assertion :- Translocation is a illigal crossing over Reason : Translocation is exchange of chromosomal segments between nonhomologous chromosome

Assertion :- Mutations are main source of evolution. Reason : Mutation causes variations.

Colchicine results in doubling of chromosome number because of

Assertion: Crossing over leads to recombination of genetic material on the two chromosomes. Reason: Crossing over is the exchange of genetic material between two homologous chromosomes.

Assertion (A). Ethylene induces ripening Reason (R). Ethylene is a gaseous hormone

CENGAGE BIOLOGY-EVOLUTION-Exercise Assertion-Reasoning Question.
  1. Assertion : The earliest organisms were anaerobes, having arisen in a...

    Text Solution

    |

  2. Assertion : There are chance of breakdown of isolating mechanism in al...

    Text Solution

    |

  3. Assertion : Balanced polymorphism is directly related with directiona...

    Text Solution

    |

  4. Assertion : Artificial selection is highly beneficial for humans . R...

    Text Solution

    |

  5. Assertion : Batesian mimicry is a form of mimicry in which can edible ...

    Text Solution

    |

  6. Assertion : There is no life on moon. Reason : Water is absent on m...

    Text Solution

    |

  7. Assertion : The first living organisms on earth were autotrophs. Re...

    Text Solution

    |

  8. Assertion : Base analogs induced transition. Reason : Base analogs ...

    Text Solution

    |

  9. Assertion : Sympatric species are geographically isolated. Reason :...

    Text Solution

    |

  10. Assertion :- Somatic mutations are sometime inheritable. Reason : So...

    Text Solution

    |

  11. Assertion : Plants having odd number of sets of chromosomes are fertil...

    Text Solution

    |

  12. Assertion :- Colchicing induces polyploidy Reason : Colchicine cause...

    Text Solution

    |

  13. Assertion : Change in structure of chromosome is called chromosomal a...

    Text Solution

    |

  14. Assertion : The first life originated in water . Reason : Condition...

    Text Solution

    |

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

    Text Solution

    |

  16. Assertion:Evolution is not occurring at present . Reason:Evolution t...

    Text Solution

    |

  17. Assertion :-Analogous organs show common ancestory. Reason :-Analogo...

    Text Solution

    |

  18. Assertion : Lung fish is connective link between fishes and amphibia. ...

    Text Solution

    |

  19. Assertion : Bird's embryo shows tooth buds for some time. Reason : ...

    Text Solution

    |

  20. Assertion : Liger in a hybrid animal. Reason : Liger is fertile.

    Text Solution

    |