Home
Class 12
BIOLOGY
[A] : One or many nucleoli are present i...

[A] : One or many nucleoli are present in a nucleus .
[R] :The nuclei of polyploids have more nucleoli than those of diploids .

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

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    TRUEMEN BIOLOGY ENGLISH|Exercise MULTIPLE CHOICE QUESTIONS|185 Videos

  • MICROBES IN HUMAN WELFARE

    TRUEMEN BIOLOGY ENGLISH|Exercise Multiple choice question|142 Videos

Similar Questions

Explore conceptually related problems

R.Q is more than one in case of

Why do stable nuclei never have more protons than neutrons ?

Which of these has R.Q. value more than one ?

Assertion : The ratio C_(P)// C_(upsilon) for a diatomic gas is more than that for a monoatomic gas. Reason : The moleculess of a monoatomic gas have more degrees of freedom than those of a diatomic gas.

Larger and more numerous nucleoli are present in cell s activley carrying out protein synthesis

Two radioactive nuclei P and Q , in a given sample decay into a stable nucleus R . At time t = 0 , number of P species are 4 N_0 and that of Q are N_0 . Half-life of P (for conversation to R ) is 1mm whereas that of Q is 2 min . Initially there are no nuclei of R present in the sample. When number of nuclei of P and Q are equal, the number of nuclei of R present in the sample would be :

Statement-1:In a spontaneous fission reaction a heavy nucleus is split into two medium sized ones, each of the new nuclei will have more binding energy per nucleon than the original nucleus Statement-2:Joining two light nuclei together to give a single nucleus of medium size means more binding energy per nucleon in the new nucleus .

Consider the following statement and choose the incorrect option. a. Large and more numerous nucleoli are present in cells actively carrying out protein synthesis. b. Nuclear pores allow bidirectional movement of molecules. c. Cytoskeleton is a glycolipid structure for mechanical support , motility and maintenance of the shape of the cell. d. Steroidal hormones are synthesized by Golgi complex .

The gynocium may have more than one pistil. Such a condition is called

A : One drum stick nucleus is present in the neutrophil of normal female. R : It is absent in the neutrophil of male.

TRUEMEN BIOLOGY ENGLISH-Living World -ASSERTION AND REASON
  1. [A] : Glyoxysome are present only in plant cells . [R] : They are fo...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  4. [A] : Nucleus controls metabolic as well as hereditary activities of t...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. [A] : The nuclear membrane forms envelope like structure called nuclea...

    Text Solution

    |

  16. [A] : The nuclear envelope is the derivative of membrane of mitochondr...

    Text Solution

    |

  17. [A] : Rods and cones of retina are modified cilia . [R] : Cilia are ...

    Text Solution

    |

  18. [A] : Golgi bodies and dictyosomes are synonymous . [R] : In plants ...

    Text Solution

    |

  19. [A] : Mitochondria have evolved from bacteria . [R] : Mitochondria a...

    Text Solution

    |

  20. [A] : Calcium carbonate crystals are called cystoliths . [R] : The m...

    Text Solution

    |