Home
Class 12
BIOLOGY
Assertion (A): Pure line varieties show ...

Assertion (A): Pure line varieties show homozygosity. Reason (R): Pure line species are obtained through cross pollination.

A

(a) Both A and R are true. R explains A.

B

(b) A is true R is false

C

(c) A is fales R is true

D

(d) Both A and R is false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PLANT BREEDING

    FULL MARKS|Exercise ADDITIONAL QUESTIONS ( 2-MARK QUESTIONS )|18 Videos

  • PLANT BREEDING

    FULL MARKS|Exercise ADDITIONAL QUESTIONS ( 3-MARK QUESTIONS )|10 Videos

  • PLANT BREEDING

    FULL MARKS|Exercise HEIGHER ORDER THINKING SKILLS (HOTs) QUESTIONS|7 Videos

  • ORGANISMS AND POPULATION

    FULL MARKS|Exercise HIGHER ORDER THINKING SKILLS (HOTs) Questions|6 Videos

  • PLANT TISSUE CULTURE

    FULL MARKS|Exercise HOTS|4 Videos

Similar Questions

Explore conceptually related problems

Pure line breed.

Assertion (A): Prosopis juliflora is native to Afganisthan. Reason (R): Alien species refers to non-native species.

Assertion (A): Smooth muscles do not show straitions. Reason (R): They are voluntary muscles.

Assertion (A) : Self - sterility is observed in Nicotiana species. Reason (R) : Because the genes are located on chromosome.

Assertion (A): a Variety formed by pure line selection methods shows more homozygosity with respect to all genes. Reason ®: Pure line plants are produced by asexual method or vegetatice propagation method.

Assertion (A): Complete linkage is noticed in male species of Drosophila. Reason (R): Completely linked genes show some crossing over.

Assertion (A): Organisms show three phases in their life cycle. Reason (R): Juvenile phase is a degenerative phase.

FULL MARKS-PLANT BREEDING-ADDITIONAL QUESTIONS ( 1-MARK QUESTIONS )
  1. Azolla is best suited biofertilizer for ........... .

    Text Solution

    |

  2. Assertion (A): SLF promotes vigorous growth and provide resistance aga...

    Text Solution

    |

  3. Assertion (A): Pure line varieties show homozygosity. Reason (R): Pu...

    Text Solution

    |

  4. Assertion (A): Hybrids show increased growth and elevated yield. Reaso...

    Text Solution

    |

  5. Statement (1): Trichoderma species is a free-living bacteria. Statemen...

    Text Solution

    |

  6. Statement (1): Clones selection is carried out in asexually propagatin...

    Text Solution

    |

  7. The process of removal of anthers from the flower is called .............

    Text Solution

    |

  8. Identify the proper sequence.

    Text Solution

    |

  9. Intra specific hybridization is also termed as ………. .

    Text Solution

    |

  10. The period of opening of a flower is ………. .

    Text Solution

    |

  11. Superiority of hybrids over parents only in vegetative growth not in y...

    Text Solution

    |

  12. The term green revolution was coind by …………. .

    Text Solution

    |

  13. Which is the second gamma garden in India?

    Text Solution

    |

  14. Match the following:

    Text Solution

    |

  15. Who is popularly called as the ''father of green revolution in India''...

    Text Solution

    |

  16. Pusa swarnim variety of Brassica species show resistance to ………. .

    Text Solution

    |

  17. The first established Atomic Garden in India was ………….. .

    Text Solution

    |

  18. Triticale is polyploid breed of ……….. .

    Text Solution

    |

  19. Raphanobrassica is an example for ………… .

    Text Solution

    |

  20. Atlas 66 is a improved variety of ………. .

    Text Solution

    |