Home
Class 12
BIOLOGY
[A] : Heterotrophs may be free living or...

[A] : Heterotrophs may be free living or symbiotic .
[R] : They from mutualistic , commensalistic , or parasitic relationships.

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

[A] : Mycoplasma are the smallest free living microorganisms . [R] : They are prokaryotic and lack cell wall .

[A] : The obligate parasites can live only on dead hosts . [R] : There are some organisms which grow and live together but each one is always harmed by the other . This phenomenon is known as antagonism .

[A] : Living organisms are like a close system . [R] : Energy in the organisms neither can be lost nor gained from the another environment .

[A] : When the organisms live together in such a manner that one organism benefitted , while other has no effects , it is called commensalism . [R] : In commensalism one partner derives benefit from the other partner without in any way benefitting or harming it .

Name the two symbiotic and free living N_(2 ) fixing microbes.

[A] : Energy can be transformed from one form to another by living organisms. [R] : All organisms can not manufacture energy but they transform it

[A] : Thiamine deficiency results in beriberi causing paralysis. [R]: People eating raw fish may also suffer from paralysis due to the deficiency of vitamin B1. Cooked fish has no such effect.

(A]: The relationship between sucker fish and shark is considered to be an example of parasitism. [R]: Sucker fish gets food and shelter from shark and also alters the population growth of the shark

[A]: A person may suffer from malaria even when his blood smear shows absence of plasmodium. [R]: The malaria germs moved away from blood into the lymph

[A] : The rate of an enzymic catalysed reaction is increased from 1 to 3 times for every 10^(@) rise in temperature . [R] : There is an optimum temperature for every enzyme beyond which there is no rise and may be denatured after more increases .

TRUEMAN BIOLOGY-Fungi -ASSERTION AND REASON
  1. [A] : Candida is a false yeast . [R] : It lacks ascus formation .

    Text Solution

    |

  2. Yeast belongs to kingdom

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. [A] : Ascomycetes and basidiomycetes are septate fungi . [R] : The h...

    Text Solution

    |

  18. [A] : Myxomycetes are not true fungi . [R] : Myxomycetes possess cha...

    Text Solution

    |

  19. [A] : Aflatoxins are produced by fungus . [R] : Aflatoxins are carc...

    Text Solution

    |

  20. [A] : Amanita is called toadstools . [R] : Amanita is a poisonous fu...

    Text Solution

    |