1.

    Which of the following was absent in the atmosphere at the time of origin of life ?

    A

    NH3N{H_3}

    B

    CH4C{H_4}

    C

    H2{H_2}

    D

    O2{O_2}

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Origin of life, Early Earth atmosphere, Atmospheric composition

    Related Questions

    1.

    The gases condensed under …A… and formed the galaxies of the present day universe. In the solar system of the milky way galaxy, earth was supposed to have been formed about …B… back. There was no atmosphere …C… on the earth. Water vapour, …D… carbon dioxide and ammonia released from molten mass covered the surface.

    Choose the correct option for A, B, C and D to complete the given paragraph with reference to NCERT textbook

    A

    A-Gravitation, B-4.5 billion years, C-Early, D-Methane

    B

    A-Acceleration, B-4.5 billion years, C-Early, D-Methane

    C

    A-Acceleration, B-4.5 billion years, C-Early, D-Ethane

    D

    A-Gravitation, B-4.5 billion years, C-Early, D-Ethane

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Gravitation, Formation of Earth, Early Atmosphere, Gases in Early Atmosphere

    2.

    Cosmozoic theory was proposed by

    A

    Hermann Richter

    B

    Louis Pasteur

    C

    Svante Arrhenius

    D

    Jöns Jacob Berzelius

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Cosmozoic theory, History of Science

    3.

    First autotrophs on the primitive earth was/were

    A

    Aerobic

    B

    anaerobic

    C

    Both (1) and (2)

    D

    Photosynthetic protist

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :autotrophs, primitive earth, aerobic, anaerobic, photosynthesis

    4.

    The sequence of origin of life could be

    A

    Organic materials → inorganic materials → colloidal aggregate → eobiont → cell

    B

    Inorganic materials → organic materials → colloidal aggregate → eobiont → cell

    C

    Inorganic materials → organic materials → eobiont → cell → colloidal aggregate

    D

    Organic materials → inorganic materials → eobiont → cell → colloidal aggregate

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :origin of life, abiogenesis, chemical evolution, eobiont, colloidal aggregate

    5.

    The Miller-Urey experiment provided evidence for which stage in the origin of life?

    A

    Synthesis of organic monomers

    B

    Synthesis of organic polymers

    C

    Formation of protobionts

    D

    Formation of DNA-based genetic systems

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    PYQ YEAR: 2016
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :origin of life, Miller-Urey experiment

    6.

    Organic compounds first evolved in earth required for origin of life were

    A

    Amino acids and nucleotides

    B

    Carbohydrates and lipids

    C

    Proteins and nucleic acids

    D

    Vitamins and minerals

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Origin of life, Organic compounds, Proteins, Nucleic acids

    7.

    In which era, life was absent?

    A

    Archaeozoic

    B

    Palaeozoic

    C

    Proterozoic

    D

    Azoic

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Geological time scale, Eras, Absence of life

    8.

    The first non-cellular form of life could have originated

    A

    3 billion years back

    B

    2 billion years back

    C

    4 billion years back

    D

    1 billion years back

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Origin of life, geological timescale

    9.

    First life on the earth originated from non-living matters has been explained by

    A

    Theory of biogenesis

    B

    Theory of abiogenesis

    C

    Theory of special creation

    D

    Theory of extraterrestrial origin

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Abiogenesis, Biogenesis, Origin of Life

    10.

    According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?

    A

    Methane

    B

    Oxygen

    C

    Hydrogen

    D

    Water vapour

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Genetic Evolution
    🎯Topic:Origin Of Life
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Oparin's theory, primitive Earth atmosphere, composition of early atmosphere

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