Home
Class 10
BIOLOGY
Assertion : In mammals, complex respirat...

Assertion : In mammals, complex respiratory system has developed.
Reason : Mammalian skin is impermeable to gases.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is NOT the correct explanation of A.

C

A is true but R is false.

D

A is false and R is true.

Text Solution

Verified by Experts

The correct Answer is:
B
Humans need more oxygen to maintain their high metabolic rates. Thus, a complex respiratory system has evolved so as to meet this need
Promotional Banner

Topper's Solved these Questions

  • LIFE PROCESSES

    OSWAL PUBLICATION|Exercise Case - Based MCQs|35 Videos

  • LIFE PROCESSES

    OSWAL PUBLICATION|Exercise SELF-ASSESSMENT-1 (I. OBJECTIVE TYPE QUESTION) (A. MULTIPLE CHOICE QUESTION)|3 Videos

  • LIFE PROCESSES

    OSWAL PUBLICATION|Exercise BOARD CORNER (LONG ANSWER TYPE QUESTIONS)|2 Videos

  • HOW DO ORGANISMS REPRODUCE ?

    OSWAL PUBLICATION|Exercise CREATING BASED QUESTIONS|6 Videos

  • MANAGEMENT OF NATURAL RESOURCES

    OSWAL PUBLICATION|Exercise CASE-BASED MCQs|15 Videos

Similar Questions

Explore conceptually related problems

Assertion :- Mammals can breathe an eat at the same time. Reason:- Mammals have negative pressure breathing

Assertion : Products of digestion are absorbed in the small intestine. Reason : Large intestine has impermeable wall.

Assertion :- Mostly mammals are viviparous. Reason :- Mammals having milk producing glands.

Assertion :- Products of digestion are absorbed in the small intestine. Reason:- Large intestine has impermeable wall.

Assertion : Plants have no specialised respiratory organs. Reason : There is very little transport of gases from one plant part to another.

Assertion In mammals, hair covers the entire body. Reason Hairs are not present on palms, soles and some parts of face in mammals.

Assertion: Synaptonemal complex develops between two synapsed homologous chromosomes. Reason : Mitosis cannot be completed without the synaptonemal complex.

Assertion : Lycaenops is a mammals - like reptile. Reason : Mammal - like reptiles originated in the Permian period.

Assertion : Glucose is favoured respiratory substrate. Reason : When glucose is used as respiratory substrate and is completely oxidised, RQ is 1.

Assertion:Mammalian teeth are heterodont. Reason: Mammalian teeth are embedded in a socket of jaw.

OSWAL PUBLICATION-LIFE PROCESSES-Assertion And Reason Based MCQs
  1. Given below are assertion and reason.Point out if both are true with r...

    Text Solution

    |

  2. Assertion (A): Digestion breaks large complex molecules to simple smal...

    Text Solution

    |

  3. Assertion (A): Muscles of stomach wall possess thick layers of muscle ...

    Text Solution

    |

  4. Assertion (A): Lipases help in emulsification of fats. Reason (R): ...

    Text Solution

    |

  5. Assertion (A): Photosynthesis is an anabolic process. Reason (R): Th...

    Text Solution

    |

  6. Assertion (A): Energy is used during the process of respiration. Re...

    Text Solution

    |

  7. Assertion (A): Humans are not truly aerobic. Reason (R): They produc...

    Text Solution

    |

  8. Assertion : In mammals, complex respiratory system has developed. Re...

    Text Solution

    |

  9. Assertion (A): Alveoli contain an extensive network of blood vessels. ...

    Text Solution

    |

  10. Assertion (A): The muscular walls of ventricles are thicker than auric...

    Text Solution

    |

  11. Assertion : There is no mixing of oxygenated and deoxygenated blood in...

    Text Solution

    |

  12. Assertion (A): Valves are present in the arteries. Reason (R): Arter...

    Text Solution

    |

  13. Assertion (A): Plants have low energy needs. Reason (R): Plant bodi...

    Text Solution

    |

  14. Assertion (A): Human body produces highly toxic substances, which if n...

    Text Solution

    |

  15. Assertion (A): Excretory unit of kidneys are nephrons. Reason (R): I...

    Text Solution

    |

  16. Assertion:hemodialysis can save and prolong the life of uremic patient...

    Text Solution

    |

  17. Assertion (A): In humans, major amount of water is absorbed by the tub...

    Text Solution

    |