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The Living World

Binomial nomenclature Practice Questions

20 free Binomial nomenclature practice questions for the NCERT Biology. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.

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Question 1 of 20 Medium

Binomial nomenclature refers to the system of naming organisms using:

  1. A One scientific name
  2. B Two Latin names
  3. C Two common names
  4. D Three scientific terms

Correct answer: Two Latin names

Binomial nomenclature uses two names for each organism: the genus and the species. This system provides a universal and standardized way of naming organisms.

Question 2 of 20 Medium

Who proposed the system of binomial nomenclature?

  1. A Charles Darwin
  2. B Aristotle
  3. C Carolus Linnaeus
  4. D Ernst Mayr

Correct answer: Carolus Linnaeus

Carolus Linnaeus introduced binomial nomenclature in his work Systema Naturae. He is regarded as the father of modern taxonomy.

Question 3 of 20 Medium

In the scientific name Mangifera indica, Mangifera represents the:

  1. A Species
  2. B Family
  3. C Genus
  4. D Order

Correct answer: Genus

In binomial nomenclature, the first word denotes the genus. Mangifera is the genus name of the mango plant.

Question 4 of 20 Medium

Which of the following rules is correct for writing scientific names?

  1. A Both the genus name and the species name always start with capital letters.
  2. B Genus name starts with a capital letter and species name with a small letter.
  3. C Both the genus name and the species name are written entirely in capital letters.
  4. D The species name is written first, followed by the genus name written second.

Correct answer: Genus name starts with a capital letter and species name with a small letter.

The genus name always starts with a capital letter, while the species name begins with a lowercase letter. This rule maintains uniformity in scientific naming.

Question 5 of 20 Medium

Scientific names are usually written in italics because:

  1. A They are derived from Greek
  2. B They are universal names
  3. C They indicate taxonomic hierarchy
  4. D They are Latinized and standardized

Correct answer: They are Latinized and standardized

Scientific names are Latinized to maintain universality. Writing them in italics distinguishes them from common text.

Question 6 of 20 Medium

When handwritten, scientific names should be:

  1. A Written in capital letters
  2. B Underlined separately
  3. C Underlined together
  4. D Written in bold letters

Correct answer: Underlined separately

When handwritten, genus and species names are underlined separately. This substitutes for italics used in printed text.

Question 7 of 20 Medium

Which of the following is a correct scientific name format?

  1. A homo Sapiens
  2. B Homo sapiens
  3. C Homo Sapiens
  4. D homo sapiens

Correct answer: Homo sapiens

The genus name Homo starts with a capital letter and the species name sapiens starts with a lowercase letter. This follows the rules of binomial nomenclature.

Question 8 of 20 Medium

The main advantage of binomial nomenclature is that it:

  1. A Written entirely in capital letters
  2. B Underlined separately from each other
  3. C Underlined together as a single unit
  4. D Written in bold letters for emphasis

Correct answer: Underlined separately from each other

When handwritten, genus and species names are underlined separately. This substitutes for italics used in printed text.

Question 9 of 20 Medium

Which of the following is NOT governed by the rules of binomial nomenclature?

  1. A It is very easy to read and pronounce for everyone
  2. B It avoids confusion caused by varying local names
  3. C It uses everyday common language for the names
  4. D It is based mainly on the habitat of the organism

Correct answer: It avoids confusion caused by varying local names

Common names vary across regions and languages, causing confusion. Binomial nomenclature provides a single, universally accepted name for each species.

Question 10 of 20 Medium

The second part of a scientific name indicates the:

  1. A Genus
  2. B Family
  3. C Species
  4. D Order

Correct answer: Species

The second word in binomial nomenclature is the species name. It identifies the specific organism within a genus.

Question 11 of 20 Medium

Why is Latin used in binomial nomenclature?

  1. A Latin is easy to learn
  2. B Latin is no longer spoken
  3. C Latin names change frequently
  4. D Latin is used only in biology

Correct answer: Latin is no longer spoken

Latin is a dead language and does not change over time. This ensures stability and consistency in scientific naming.

Question 12 of 20 Medium

Which organization sets the rules for binomial nomenclature in animals?

  1. A ICBN
  2. B ICZN
  3. C WHO
  4. D UNESCO

Correct answer: ICZN

The International Code of Zoological Nomenclature (ICZN) governs the naming of animals. It ensures uniformity and avoids duplication.

Question 13 of 20 Medium

Which of the following represents the correct binomial name of humans?

  1. A Homo Sapiens
  2. B homo sapiens
  3. C Homo sapiens
  4. D HOMO sapiens

Correct answer: Homo sapiens

Homo sapiens follows all rules of binomial nomenclature. The genus is capitalized and the species is written in lowercase.

Question 14 of 20 Medium

Binomial nomenclature helps in classification mainly by:

  1. A Grouping organisms by size
  2. B Providing unique names to species
  3. C Describing habitat only
  4. D Showing evolutionary age

Correct answer: Providing unique names to species

Each species is assigned a unique scientific name. This avoids ambiguity and aids accurate classification and communication.

Question 15 of 20 Medium

If two organisms have the same genus name but different species names, they are:

  1. A Unrelated
  2. B Identical
  3. C Closely related
  4. D From different kingdoms

Correct answer: Closely related

Organisms sharing the same genus are closely related. Differences in species names indicate distinct species within that genus.

Question 16 of 20 Medium

Which part of the scientific name is more specific?

  1. A Genus
  2. B Family
  3. C Species
  4. D Order

Correct answer: Species

The species name is more specific than the genus. It identifies the exact organism within a genus.

Question 17 of 20 Medium

Which of the following statements is correct about binomial nomenclature?

  1. A It uses common names only
  2. B It allows multiple names for one species
  3. C It provides one scientific name per species
  4. D It changes names frequently

Correct answer: It provides one scientific name per species

Binomial nomenclature assigns one valid scientific name to each species. This avoids duplication and confusion.

Question 18 of 20 Medium

In printed text, scientific names are written:

  1. A In bold letters
  2. B Underlined
  3. C In italics
  4. D In capital letters

Correct answer: In italics

Italicizing scientific names distinguishes them from ordinary text. This is a standard convention in biological writing.

Question 19 of 20 Medium

Which code governs the binomial nomenclature of plants?

  1. A ICZN
  2. B ICBN
  3. C IUCN
  4. D WHO

Correct answer: ICBN

The International Code of Botanical Nomenclature (ICBN) regulates plant naming. It ensures consistency and standardization.

Question 20 of 20 Medium

The practice of binomial nomenclature mainly supports biology by:

  1. A Increasing the number of species
  2. B Standardizing organism names globally
  3. C Replacing classification systems
  4. D Eliminating the need for taxonomy

Correct answer: Standardizing organism names globally

Binomial nomenclature standardizes names worldwide. This allows scientists across the globe to communicate clearly and accurately.

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