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    5.

    Which of the following combinations of characters is unique to the phylum Chordata?

    A

    Bilateral symmetry, triploblastic, coelomate

    B

    Notochord, dorsal hollow nerve cord, pharyngeal gill slits, post-anal tail

    C

    Closed circulatory system, segmented body, jointed appendages

    D

    Radial symmetry, diploblastic, acoelomate

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    6.

    Which of the following statements regarding universal rules of nomenclature is wrong?

    A

    Cation named first, anion second

    B

    For covalent compounds, the more electronegative element is named second

    C

    The oxidation state of the metal is written in Roman numerals in parenthesis for elements with multiple oxidation states

    D

    The prefixes mono, di, tri, etc., are used for naming both ionic and covalent compounds

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    8.

    Choose the wrong statements regarding universal rules of nomenclature

    A

    The first word in a biological name represents the genus

    B

    The first word denoting the genus starts with a capital letter

    C

    Both the words in a biological name, when handwritten are separately underlined

    D

    Biological names are generally in English and written in italics

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