The right way to write botanical name of pea plant is _____
A. \[PISUM\]\[SATIVUM\]
B. \[pisum\]\[sativum\]
C. \[pisum\] \[sativom\]
D. \[pisum\] \[sitavum\]

Hint: A botanical name is the scientific name given to a particular plant species. A botanical name is essential so that a plant species would have a particular name that is acceptable worldwide. Descriptive botanical names are scientific names of irregular plant groups that are not systematically derived from the name of a category of genus.

Complete answer:
When using common names, a botanical name will prevent plausible misunderstandings and misidentification of a plant species. A plant species botanical name can be composed of one, two , or three sections. It is composed of the genus name and the specific epithet in two sections. The genus name is the first part of the botanical name of a plant species, while the second part is the specific epithet.
The particular epithet may be followed by the name of the person responsible for naming the species in botanical journals and texts. It should not be italicized by this name. Ranks below the species are also italicized, but not italicized is the connecting word. e.g. Lavandula angustifolia. If the meaning is clear, the generic name can be abbreviated, e.g. \[L.angustifolia\].

A 'collective name' for a group of plants is a common name. This suggests a grouping of species that all share a set of similar characters. Ideally, all of these must have evolved from a common ancestor. The specific name helps us to differentiate between various species within a genus. Binomial names are often written first, beginning with a capital letter, with the common name. The specific epithet always follows the generic name, starting with a lower-case letter. In general, generic and particular names are in Latin or are Latinized words from other languages , particularly Greek. Other derivations, such as native names or even acronyms, are also often used.

Hence, the correct answer is option (B).

Note: There are no rules governing common names, but writing the names in smaller cases is standard, except when naming a cultivar and using Roman fonts. Depending on the form of the generic name, specific epithets also need to adhere to some grammatical laws.