Home
Class 12
BIOLOGY
[A] : Mimicry is a device adopted to pro...

[A] : Mimicry is a device adopted to protect the organism from its enemies
[R] : It helps the animal in self defence and survival .

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

  • Drug Addiction

    TRUEMEN BIOLOGY ENGLISH|Exercise ASSERTION AND REASON|20 Videos

  • ECOSYSTEM

    TRUEMEN BIOLOGY ENGLISH|Exercise MCQ|178 Videos

Similar Questions

Explore conceptually related problems

[A] : Leaf butterfly & stick insect show mimicry to dodge their enemies . [R] : Mimicry helps to acquire body colour blending with the surroundings .

When liquid medicine of density rho is to be put in the eye, it is done with the help of a dropper. As the bylb on the top of the dropper is pressed. A drop frons at the opening of the dropper. We wish to estimate the size of the drop. We first assume that the drop formed at the opening is spherical because that requires a minimum increase in its surface energy, To determine the size. We calculate the net vertical force due to the surface tension T when the radius of the drop is R. when this force become smaller than the weight of the drop the drop gets detached from the dropper. If the radius of the opening of the dropper is r, the vertical force due to the surface tension on the drop of radius R (assuming rlt ltR) is

[A]: Homology is the similarity between organs of same animal based on common ancestory. [R]: Analogy is seen in every organ system from fish to man

[A]: Pollen grains from male parent are mostly transferred to the stigma in the female parent by some external ageincy. [R]: This is because the male flowers or male organs have no intemal device to reach the female organs in another flower

A very long solenoid is made out of a wire with n turns per units length. The radius of the cylinder is a and is negligible compared to its length l. The interior of the cylinder is filled with materials such that the linear magnetic permeability varies with the distance r from axis according to mu(r)={{:(mu_(1)="constant , for "0ltrlt b),(mu_(2)="constant , for "b lt r lt a):}} The self - inductance of the solenoid is

Which of the following statements is/are incorrect ? (i) The liver fluke, a parasite, depends on intermediate hosts (a snail) to complete its life cycle. (ii) The malarial parasite needs a vector (mosquito) to spread to other host organisms. (iii) In case of brood parasitism, the eggs of parasitic birds are not detected and removed from the nest because the parasite's eggs resemble the host's eggs in morphology and colour. (iv) A population of frogs protected from all predators would increase indefinitely.

TRUEMEN BIOLOGY ENGLISH-Ecology -ASSERTION AND REASON
  1. [A] : Flora and Fauna of different parts of the world do not show unif...

    Text Solution

    |

  2. [A] : A species is an interbreeding population which is reproductively...

    Text Solution

    |

  3. [A] : Mimicry is a device adopted to protect the organism from its ene...

    Text Solution

    |

  4. [A] : Biological magnification is concentration of substances instead ...

    Text Solution

    |

  5. [A] : The rate of energy storage at consumer levels are referred to as...

    Text Solution

    |

  6. [A] : Primary productivity is shown by green plants only . [R] : Pri...

    Text Solution

    |

  7. [A] : Energy pyramid is sloping . [R] : The energy of one trophic le...

    Text Solution

    |

  8. [A] : The biotic community and the non living enviroment of an ara fun...

    Text Solution

    |

  9. [A] :Green plants ara secondary consumers [R]: Microconsumers break...

    Text Solution

    |

  10. [A] : A food chain is a group of organism in which there is a transfer...

    Text Solution

    |

  11. [A] : Food chains are not paths of energy flow throgh and ecosysterm. ...

    Text Solution

    |

  12. [A] : There is a grudual increase in the energy content at successive ...

    Text Solution

    |

  13. [A] : There is a gradual increase in the energy content at successive ...

    Text Solution

    |

  14. [A] : Carbon monoxide is poisonous . [R] : It destroys RBC .

    Text Solution

    |

  15. [A] : An estimation of B.O.D gives an indication of the amount of poll...

    Text Solution

    |

  16. [A] : PAN is a secondary pollutant . [R] : The secondary pollutants ...

    Text Solution

    |

  17. [A] : Soil particles , particularly clay and organic matter in soil , ...

    Text Solution

    |

  18. [A] : Algal blooms deplete dissolved O(2) levels in polluted water bod...

    Text Solution

    |

  19. [A] : Orchids are most threatened plants in tropics . [R] : Tropical...

    Text Solution

    |

  20. [A] : Vegetation in the catchment areas prevents flash floods in the d...

    Text Solution

    |