Home
Class 12
BIOLOGY
[A] : All terrestrial mammals are air br...

[A] : All terrestrial mammals are air breathers.
[R]: Because of terrestrial habitat. they have well developed lungs for air breathing.

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

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ANIMAL KINGDOM -NONCHORDATES

    TRUEMAN BIOLOGY|Exercise MCQ|283 Videos

  • APPLICATION OF BIOTECHNOLOGY

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|122 Videos

Similar Questions

Explore conceptually related problems

Lungs are totally emptied and refilled with fresh air during breathing.

State the volume of air remaining in the lungs after a normal breathing.

State the volume of air remaining in the lungs after a normal breathing .

[A] : Protozoans have no physiological division of labour . [R] : They have a well developed cell , tissue and tissue organ system .

[A] : Protozoans have no physiological division of labour . [R] : They have a well developed cell , tissue and tissue organ system .

A person can expel all the air from lungs through forceful expiration.

[A] : Stratosphere is an excellent region for air travel . [R] : Because it is poor in oxygen & rich in ozone .

[A] : Many desert mammals cool the exhaled air in their noses , before it is expelled out through nostrills . [R] : The moisture condensation in the nose and is not lost as water vapours along with the exhaled air .

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because 1. there is a negative pressure in the lungs 2. there is a negative intrapleural pressure pulling at the lung walls 3. there is a positive intrapleural pressure 4. pressure in the lungs is higher than the atmospheric pressure

A conical tent is required to accommonate 5 people each person must have 16 sq-ft of space on the ground and 100 cubic -ft or air to breathe . Find out the vertical height and slant height of the tent.

TRUEMAN BIOLOGY-Animal Physiology -ASSERTION AND REASON
  1. [A] : Thiamine deficiency results in beriberi causing paralysis. [R...

    Text Solution

    |

  2. Assertion. Minerals do not form a component of biologically active com...

    Text Solution

    |

  3. [A] : All terrestrial mammals are air breathers. [R]: Because of t...

    Text Solution

    |

  4. A : Sense organs, do not interpret the stimulus, it is done by brain. ...

    Text Solution

    |

  5. [A] : The record of electric potential that is ini- tiated in the card...

    Text Solution

    |

  6. [A] : in amphibians heart is two chambered. [R]: The oxygenated blo...

    Text Solution

    |

  7. [A] : Peyer's patches are derivatives of lymphoid tissue. [R]: The...

    Text Solution

    |

  8. [A] : Elephants have lophodont type of teeth. [R]: There is an int...

    Text Solution

    |

  9. [A] : A complete double circulation occurs in birds for the first time...

    Text Solution

    |

  10. [A] : The heart of birds is more advanced than the four chambered hear...

    Text Solution

    |

  11. A : Portal system consists of veins which start from capillaries and e...

    Text Solution

    |

  12. [A]: in mammalian heart there is a very swift conduction of stimulatio...

    Text Solution

    |

  13. [A] : Reduced blood can carry more CO2 than oxygenated blood. [R]:...

    Text Solution

    |

  14. [A] : The central nervous system regulates the release of saliva from ...

    Text Solution

    |

  15. [A] : Gall stones are pebble sized structures that formed in the gall...

    Text Solution

    |

  16. [A] : Upon stimulation of a muscle cell, cal- cium ions (Ca^(++)) are...

    Text Solution

    |

  17. [A]: Osteoporosis is a bone disorder that results from the loss of cal...

    Text Solution

    |

  18. [A] : In mammals, ends of presynaptic fibres are enlarged to form syn...

    Text Solution

    |

  19. [A] : Receptors located in tendons, joints and skeletal muscle give in...

    Text Solution

    |

  20. [A]: Lateral-line organs are important in connection with aquatic mode...

    Text Solution

    |