Thursday 1st May 2025
    Difficulty: Medium

    Invertebrates (Quiz #895)

    Photo by <a href="https://unsplash.com/@ferhat?utm_content=creditCopyText&utm_medium=referral&utm_source=unsplash">Ferhat Deniz Fors</a>
    Photo by Ferhat Deniz Fors (Unsplash)

    Invertebrates are animals that do not have a vertebral column (commonly known as a spine or backbone).

    1. What percentage of animal species are invertebrates?

    2. Which of these is NOT a member of the phylum Mollusca (molluscs)?

    3. Which of these is the largest (in terms of length) invertebrate ever to have lived on Earth?

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