Home
Class 12
BIOLOGY
[A] : Plasma membrane is thin and not vi...

[A] : Plasma membrane is thin and not visible as a separate layer .
[R] : It apears merely as a surface layer of cytoplasm .

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

Debove's membrane is a layer of

[A] : In old age, the skin gets wrinkled. [R]: Epidermis has a single layer of cells.

[A] : Viruses are not considered organisms . [R] : Viruses are merely nucleoprotein particles and lack cytoplasm and metabolic wastes .

The main atmospheric layer near the surface of the earth is

[A] : Pearl is formed when a foreign particle gets in between shell and mantle . [R] : The inner nacreous layer called mother of pearl is formed by layers of CaCO_(3) and concholin.

[A] : Mammals lack mucous glands in their skin. [R] : The epidermis has many layers of cells.

[A] : Bacteria fully qualify to be placed in a separate kingdom . [R] : They are prokaryotic in organisation and have no tone nucleus and no membrane bound organelle.

[A] : Depletion of ozone layer results in human disease like cancer . [R] : Ozone layer absorbs UV radiations .

[A] : When a foreign object , such as a sand grain gets in between the shell and mantle , it results in the formation of a pearl . [R] : The inner nacreous layer of irridiscent nacre is called the mother of pearl which is formed by many thin and alternating layers of calcium carbonate and concholin .

A copper plate was dipped into a solution of silver nitrate . After sometime , a black layer was observed on the surface of copper plate. State the reason for it and write chemical equation of the reaction involved.

TRUEMAN BIOLOGY-Living World -ASSERTION AND REASON
  1. [A] : The lymphocytes have well developed lysosomes . [R] : Because ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. [A] : F(0) - F(1) - ATPase complex is embedded in inner membrane of mi...

    Text Solution

    |

  13. [A] : Centromere is concerned with splitting of chromosomes . [R] : ...

    Text Solution

    |

  14. [A] : Peroxisomes and basal bodies are called microbodies . [R] : Mi...

    Text Solution

    |

  15. [A] : A microtubule structure that brings about chromosomal movement d...

    Text Solution

    |

  16. [A] : Active transport results in solute movement against a concentrat...

    Text Solution

    |

  17. [A] : Plasma membrane is thin and not visible as a separate layer . ...

    Text Solution

    |

  18. [A] : Pectins are abundant in middle lamella in plant cells . [R] : ...

    Text Solution

    |

  19. Assertion : Mitochondria and chloroplasts are semiautonomous organelle...

    Text Solution

    |

  20. Assertion: Among the primates, chimpanzee is is the closest relative o...

    Text Solution

    |