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9th Class Science Sample Paper Science Olympiad Model Test Paper-13

  • question_answer
    Which one of the following is not a characteristic of phylum mollusca?

    A) They are diploblastic animals without true coelom

    B) The body is bilaterally symmetrical

    C) They live in terrestrial or aquatic habitat

    D) Their body is often protected by a hard calcareous shell

    E) None of these

    Correct Answer: A

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