1.

    A rare genetic mutation affects the function of pulmonary surfactant. Which of the following would be the MOST direct consequence of this mutation?

    A

    Decreased airway resistance and increased airflow

    B

    Increased alveolar surface tension and difficulty inflating lungs

    C

    Enhanced gas exchange and increased oxygen diffusion

    D

    Reduced pulmonary blood pressure and improved circulation

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Respiratory System, Pulmonary Surfactant, Alveoli, Surface Tension

    Related Questions

    1.

    Which is the wrong matched

    A

    sponges – entire body surface

    B

    insects – body surface

    C

    aquatic arthropods – gills

    D

    earth worms - moist cuticle

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Animal respiration, gas exchange mechanisms, adaptations

    2.

    Which one respires through gills?

    A

    Fish

    B

    Bird

    C

    Snake

    D

    Dog

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Animal respiration, gill respiration, animal classification

    3.

    Which one respires through gills?

    A

    Fish

    B

    Dog

    C

    Bird

    D

    Snake

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Animal respiration, gills, aquatic animals

    4.

    A fully grown tadpole larva of respires through

    A

    Skin

    B

    Gills

    C

    Lungs

    D

    Trachea

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Animal respiration, Tadpole development, Respiratory organs

    5.

    Animals who use their skin as an accessory respiratory organ are

    I. lizard II. frog

    III. rabbit IV. Zebra

    Choose the correct option

    A

    I and II

    B

    Only I

    C

    IV and II

    D

    Only II

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Animal respiration, cutaneous respiration

    6.

    Which is the wrong matched

    A

    sponges – entire body surface

    B

    insects – body surface

    C

    aquatic arthropods – gills

    D

    earth worms - moist cuticle

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Breathing And Exchange Of Gases
    🎯Topic:Respiratory Organs
    🎓 Ncert Level:Analyzing
    🎯Difficulty :Easy
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :gas exchange, animal respiration, body structures

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