Home
Class 12
BIOLOGY
[A] : Disease reduce the vitality of pla...

[A] : Disease reduce the vitality of plants , inhibit their development and cause different morphological and physiological aberrations .
[R] : The diseases result in the death of a plant .

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

Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|335 Videos
  • Genetics

    TRUEMAN BIOLOGY|Exercise ASSERTION AND REASON|122 Videos

Similar Questions

Explore conceptually related problems

What are the main factors on which the disease development in a plant depends?

Name two bacterial diseases of plants.

[A]: Random mutations together with genetic drifts and selection pressure establish ge- netic difference and morphological and physiological variations in formerly identical populations. [R]: These differences generally accumulate and thus lead to the establishment of clines, geographical races and finally distinct sub- species.

Name two diseases caused by viruses in crop plants.

Name any two viral diseases in plants.

Which of the following is plant viral disease?

Excessive supply of chemical fertilizers often causes death of crop plants due to

TRUEMAN BIOLOGY-Fungi -ASSERTION AND REASON
  1. [A] : Bordeaux mixture is an organic fungicide . [R] : Bordeaux mixt...

    Text Solution

    |

  2. [A] : The obligate parasites can live only on dead hosts . [R] : The...

    Text Solution

    |

  3. [A] : Disease reduce the vitality of plants , inhibit their developmen...

    Text Solution

    |

  4. [A] : Lichens are composite organisms . [R] : The fungal component i...

    Text Solution

    |

  5. [A] : Candida is a false yeast . [R] : It lacks ascus formation .

    Text Solution

    |

  6. Yeast belongs to kingdom

    Text Solution

    |

  7. [A] : Heterotrophs may be free living or symbiotic . [R] : They from...

    Text Solution

    |

  8. [A] : Rusts and smuts are club fungi that parasitize cereal crops . ...

    Text Solution

    |

  9. Assertion : The fungi are widespread in distribution and they even liv...

    Text Solution

    |

  10. [A] : Symbiosis is also furnished by mycorrhiza . [R] : In Mycorrhiz...

    Text Solution

    |

  11. [A] : Phytoalexins are formed as a result of fusion between auxins and...

    Text Solution

    |

  12. [A] : Zygospore fungi produce spores within sporangia . [R] : During...

    Text Solution

    |

  13. [A] : Club fungi reproduce sexually . [R] : In club fungi , dikaryot...

    Text Solution

    |

  14. [A] : The sterile portion of sporangium in Mucor is called columella ....

    Text Solution

    |

  15. [A] : Fungi are thallophyta . [R] : Cell wall of fungi is made up of...

    Text Solution

    |

  16. [A] : Fungi are either saprobes or parasitic . [R] : Fungi posses ha...

    Text Solution

    |

  17. [A] : Aspergillus is used as bioindicaor . [R] : Aspergillus niger i...

    Text Solution

    |

  18. [A] : Rhizopus contains two types of hyphae . [R] : The unbranched h...

    Text Solution

    |

  19. [A] : Puccinia graminis is autoecious . [R] : It complete its life c...

    Text Solution

    |

  20. [A] : Schizosaccharomyces is also called the fission yeast . [R] : S...

    Text Solution

    |