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Biology 3rd Card Mark2021/22

Quiz by Jaha Rashid

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25 questions
Show answers
  • Q1
    When colonies of bacteria fossilize, they can form ---
    Stromatolites.
    half -life.
    Epochs
    Eras
    120s
  • Q2
    On the geological time scale, periods are divided into .
    Eras
    sub period
    Epochs
    Energy ,
    120s
  • Q3
    The movement of the Earth's continents over time is caused by ---
    Plate tectonics.
    Heavy wind
    Lightning
    120s
  • Q4
    The time it takes for half the isotopes in a sample to decay is called its ---
    Eras
    Half --life.
    Period
    Decade
    120s
  • Q5
    The longest time spans in the geological time scales are called ---
    Years
    Months
    Eras
    period
    120s
  • Q6
    How did scientists establish the appropriate age of fossils?
    By looking at the fossils
    By taking picture of the fossils
    by looking at the position of the layers of the Mountain.
    By Radioactive dating.
    120s
  • Q7
    How do heterotrophs affect the atmosphere ?
    Releasing oxygen in the atmosphere.
    Releasing Argon in the atmosphere .
    Releasing Methane in the atmosphere .
    Releasing Carbon dioxide into the atmosphere.
    120s
  • Q8
    What gases present in the atmosphere of Earth today were not present in Earth's ancient atmosphere ?
    Oxygen and Argon
    Ammonia and Methane
    Carbon dioxide/Hydrogen
    Nitrogen and sulfur dioxide
    120s
  • Q9
    in the atmosphere today ,which gases are most abundant?
    Oxygen, Argon, .and methane.
    Hydrogen ,Helium, Oxygen
    Nitrogen ,Oxygen, and Argon
    Carbon dioxide, Oxygen, and Sulfur dioxide
    120s
  • Q10
    About how long ago did Earth Form?
    3.5 billions years ago.
    6.5 billion years ago.
    8.5 billions years ago.
    4.5 billion years ago.
    120s
  • Q11
    If the carbon- 14in the mollusk has undergone two half -lives ,how old is the mollusk?
    88.000 years
    56,000 years
    11,200 years
    45,000 years
    120s
  • Q12
    If the mollusk contained 1, 000 grams of carbon-14at the time of its death, how much carbon 14 should still be present in the mollusk after 3 half -life .
    Approximately 125 grams.
    900 grams
    500 grams,
    800 grams.
    120s
  • Q13
    When is the mutation likely to be beneficial?
    when it is useful to the environment.
    when it has no affect on the environment.
    It never be beneficial.
    120s
  • Q14
    What is the meaning of evolution?
    abrupt change .
    Evolution means change over times .
    Not at all any change.
    Genetic abnormality
    120s
  • Q15
    When is the meaning of convergent evolution?
    when there is a same species shows different characteristics.
    When different species with different ancestors develop similar characteristics.
    species that interact closely often adapt to one another in a process.
    120s

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