9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which of the following is not a characteristic of the class annelida?

    A) They are triploblastic animals.

    B) They do not contain true coelom.

    C) Their body is bilaterally symmetrical.

    D) They have organ level of organisation.

    E) None of these

    Correct Answer: B

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