1.

    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

    Related Questions

    1.

    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

    2.

    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 respiration, anaerobic respiration, photosynthesis

    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

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