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    Question

    What is the common morphological trait shared by all

    crustaceans?
    A Chewing mouthparts Correct Answer Incorrect Answer
    B Six walking legs Correct Answer Incorrect Answer
    C Terrestrial adaptation Correct Answer Incorrect Answer
    D Paleopterous wings Correct Answer Incorrect Answer
    E Exoskeleton without segmentation Correct Answer Incorrect Answer

    Solution

    All crustaceans, including crabs and shrimps, possess chewing mouthparts. However, they do not all have six legs, and most are aquatic.

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