Home
Class 12
BIOLOGY
[A] : Chloroplasts contain circular DNA ...

[A] : Chloroplasts contain circular DNA , rRNA , mRNA and are also able to conduct protein synthesis .
[R] : Origin of chloroplasts is from the proplastids.

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

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|191 Videos
  • MICROBES IN HUMAN WELFARE

    TRUEMAN BIOLOGY|Exercise Multiple choice question|144 Videos

Similar Questions

Explore conceptually related problems

Consider the following statements : Assertion (A) : Amber codon is a termination codon . Reason (R ) : If in a m-RNA, a termination codon is present, the protein synthesis stops abruptly whether the protein synthesis is complete or not. Now select you answer from code given below :

[A]: Recombinant DNA contains DNA from two or more sources. [R]: Plasmids are small extra rings of DNA in bacteria that carry genes not present in the bacterial chromosome

[A] : Mitochondria have evolved from bacteria . [R] : Mitochondria and Bacteria both have circular DNA .

Consider the following nucleic acids 1. DNA, 2. r-RNA, 3. t-RNA, 4. m-RNA choose the correct sequence of their arrangement according to their participation in protein synthesis

You are asked to examine a cell using a powerful light microscope. The image you see has a clearly defined nucleus and mitochondria. It also has a large central vacuole and chloroplasts. From what group of organisms did this cell most likely come?

[A]: A tadpole whose thyroid gland has been removed does not metamorphose into adult [R]: calcitonin and thyroxine are produced from thyroid gland, these hormones stimu- late protein synthesis for the development and growth of tadpole larva.

TRUEMAN BIOLOGY-Living World -ASSERTION AND REASON
  1. [A] : Mitochondria are called power houses of the cell. [R] : Mitoch...

    Text Solution

    |

  2. [A] : Lysosomes are also known as Suicidal bags of the cells . [R] :...

    Text Solution

    |

  3. [A] : Chloroplasts contain circular DNA , rRNA , mRNA and are also abl...

    Text Solution

    |

  4. [A] : Mitochondria synthesize energy rich compounds called ATP . [R]...

    Text Solution

    |

  5. [A] : Chloroplasts have 75% chlorophyll a and 25% chlorophyll b [R] ...

    Text Solution

    |

  6. [A] : Peroxisomes occur , both in plants and animals . [R] : Peroxis...

    Text Solution

    |

  7. [A] : Glyoxysome are present only in plant cells . [R] : They are fo...

    Text Solution

    |

  8. Assertion. The nuclear envelope acts as an interface between the genet...

    Text Solution

    |

  9. [A] : One or many nucleoli are present in a nucleus . [R] :The nucle...

    Text Solution

    |

  10. [A] : Nucleus controls different metabolic as well as hereditary activ...

    Text Solution

    |

  11. [A] : Homeostasis is the maintenance of a stable internal environment ...

    Text Solution

    |

  12. [A] : Usually the cells of animals and plants have controlled growth ....

    Text Solution

    |

  13. [A] : Behavioural activities that are correlated with a one week cycle...

    Text Solution

    |

  14. [A] : Prokaryotic cell shows no cyclosis. [R] : Eukaryotic cell show...

    Text Solution

    |

  15. [A] : No energy can be released in the cell in the absence of mitochon...

    Text Solution

    |

  16. [A] : The lymphocytes have well developed lysosomes . [R] : Because ...

    Text Solution

    |

  17. [A] : Prokaryotes lack Mitochondria. [R] : Their plasma membrane bea...

    Text Solution

    |

  18. [A] : Nuclear membrane of karyotheca forms an envelope-like structure ...

    Text Solution

    |

  19. [A] : The space between nuclear envelope and nucleolus is filled by ka...

    Text Solution

    |

  20. [A] : Leucocytes can digest any thing harmful they eat . [R] : Leuco...

    Text Solution

    |