Cell structure (prokaryotic vs. eukaryotic)

Mode of nutrition (autotrophic vs. heterotrophic)

Thallus organization (unicellular vs. multicellular)

Detailed evolutionary relationships based on genetic analysis

Panthera Tigris

Mangifera indica

Panthera Leo

Columnba LIVEA

Cation named first, anion second

For covalent compounds, the more electronegative element is named second

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

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

The first word in a biological name represents the genus

The first word denoting the genus starts with a capital letter

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

Biological names are generally in English and written in italics

The first word in a biological name represents the genus

The first word denoting the genus starts with a capital letter

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

Biological names are generally in English and written in italics

Panthera Tigris

Mangifera indica

Panthera Leo

Columnba LIVEA

Cation is named first in ionic compounds.

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

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

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