Life Has A History Quiz! Part- II

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| By Jan_parker
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Jan_parker
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Quizzes Created: 9 | Total Attempts: 59,881
Questions: 9 | Attempts: 290

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Life Has A History Quiz! Part- II - Quiz


Questions and Answers
  • 1. 

    Cladograms are diagrams that show us:

    • A.

      How organisms are related to one another

    • B.

      Which group is missing a common ancestor

    • C.

      Which group evolved first

    Correct Answer
    A. How organisms are related to one another
    Explanation
    Cladograms are diagrams that depict the relationships between organisms. They illustrate the evolutionary history and common ancestry among different groups of organisms. By analyzing the branching patterns and shared characteristics in a cladogram, we can understand how organisms are related to one another. This helps in studying the evolutionary relationships and tracing the origins of various species.

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  • 2. 

    Extinction is common.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Extinction is a natural process that has occurred throughout the history of Earth. It is a common phenomenon where species cease to exist due to various factors such as environmental changes, competition, or natural disasters. Fossil records provide evidence of numerous extinct species, highlighting the common occurrence of extinction over time. Therefore, the statement "Extinction is common" is true.

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  • 3. 

    Thousands of years passed between the extinction of dinosaurs and the appearance of the first humans.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The statement is false because the extinction of dinosaurs occurred around 65 million years ago, while the appearance of the first humans, specifically Homo sapiens, is estimated to have occurred around 200,000 years ago. Therefore, the time gap between the extinction of dinosaurs and the appearance of the first humans is not just a few thousand years, but millions of years.

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  • 4. 

    Evolution can only happen if there are no variations within a species.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false. Evolution actually relies on variations within a species. Variations, or genetic diversity, provide the raw material for natural selection to act upon. It is through the accumulation of small variations over time that new species can arise. Without variations, there would be no genetic differences to drive the process of natural selection and adaptation.

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  • 5. 

    Of all the species that have ever lived on this planet, how many have gone extinct?

    • A.

    • B.

      Between 30% and 50%

    • C.

      Between 60% and 85%

    • D.

      >90%

    Correct Answer
    D. >90%
    Explanation
    Over 90% of the species that have ever existed on Earth have gone extinct. This means that only a small fraction of species that have ever lived still exist today. Extinction is a natural process that has occurred throughout the history of the planet, but the current rate of extinction is much higher than normal due to human activities such as habitat destruction, pollution, and climate change. This high percentage highlights the importance of conservation efforts to protect the remaining species and their habitats.

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  • 6. 

    Natural selection is an important mechanism for evolution. If there is a change in the environment, which of the following statements is correct:

    • A.

      Those organisms that are the strongest will survive and reproduce.

    • B.

      Individual organisms will evolve in order to survive and reproduce.

    • C.

      Those organisms that have features that can take advantage of the environmental change will survive and reproduce.

    Correct Answer
    C. Those organisms that have features that can take advantage of the environmental change will survive and reproduce.
    Explanation
    Natural selection is a process where individuals with advantageous traits that allow them to better adapt to their environment are more likely to survive and reproduce. This means that those organisms that have features that can take advantage of the environmental change will have a higher chance of survival and reproduction, leading to the passing on of these advantageous traits to future generations. Therefore, this statement correctly describes the role of natural selection in evolution.

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  • 7. 

    Name three kinds of fossils other than bones and teeth.

  • 8. 

    Name three kinds of evidence that scientists use to determine common ancestry.

  • 9. 

    Dinosaurs existed on earth for _________ millions of years before becoming extinct.

    Correct Answer
    160
    Explanation
    Dinosaurs existed on earth for 160 million years before becoming extinct. This means that they roamed the earth for a very long time before eventually going extinct.

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