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    2.

    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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    4.

    ICVCN stands for

    A

    International Code of Virus Nomenclature

    B

    International Code of Valuation in Nomenclature

    C

    International Code of viral Classification and Nomenclature

    D

    International Code of Virulence Nomenclature

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    7.

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

    A

    Cation is named first in ionic compounds.

    B

    For covalent compounds, the less electronegative element is named first.

    C

    The name of metallic element is followed by its oxidation state in roman numeral if the metal has variable valency.

    D

    The ending of the more electronegative element is changed to ‘-ium’ in the names of covalent compounds.

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    8.

    Species is considered as

    A

    Real units of classification devised by taxonomists

    B

    The lowest unit of biosystematics

    C

    Real basic unit of classification

    D

    Artificial concept of human mind which cannot be defined in absolute terms

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    9.

    Tautonym is

    A

    Unscientific explanation of a phenomenon

    B

    Common name used as a scientific name

    C

    Nonlatinised name

    D

    Same name for genus and species

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