Biology

Plant Biology and Classification

1,796 Questions

Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.

Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems

Plant Biology and Classification Questions

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

If a botanist want to study nomenclature of a similar species, the scientist will study

  1. Syntype

  2. Isotype

  3. Neotype

  4. Mesotype
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Syntype: It refers to two or more specimens collected by the author simultaneously of the same species.
    2. Isotype: It is a duplicate of the holotype collected and can be used for studies when holotype is not accessible.
    3. Neotype: It refers to the new specimen collected when the original material is missing.
    So, the correct option is 'Isotype'.
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Two similar holotypes are called 

  1. Mesotypes

  2. Meotypes

  3. Syntypes

  4. Isotypes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described.
  • An isotype is a duplicate of the holotype and is often made for plants, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering.
  • Hence Two similar holotypes are called isotypes
  • So, the correct answer is 'Isotypes'
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

In nomenclature 

  1. Both genus and species are printed in italics.

  2. Genus and species may be of same name.

  3. Both in genus and species the first letter is capital.

  4. Genus is written after the species.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The various conventions followed while writing Binomial nomenclature are : 
1. The first letter of the genus name must be capital and the first letter of the species name must be a small letter.
2. Scientific names must be underlined separately when written by hand.
3. In printed matter, these names are printed in Italic and underlined when handwritten.
So, the correct option is 'Both genus and species are printed in italics'.
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

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

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

  2. The first word in the biological name represents the genus.

  3. The first word denoting the genus start with a capital letter.

  4. Biological names are generally Greek and written in italics.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are certain rules regarding biological nomenclature like - 

  1. Both the words in a biological name when handwritten are separately underlined.
  2. The first word in the biological name represents the genus.
  3. The first word denoting the genus starts with a capital letter.
Also, biological names are generally in Latin and written in italics.
So, the correct option is 'Biological names are generally Greek and written in italics'.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Read the statements and identify the incorrect one.

  1. Scientific names are often descriptive.

  2. Scientific names indicate relationship.

  3. Scientific names favour multiple naming.

  4. Scientific names are used all over the world.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Scientific names do not favor multiple naming as it will create confusion among the scientists over the world. Also, the very first significance of the scientific name is to give a unique single name to each species.

So, the correct option is 'Scientific names favor multiple naming'.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Specific epithet is

  1. First word in the scientific name of a species

  2. Second word in the scientific name of a species

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The first word in the scientific name is the generic name ( represents the genus) and the second word is the specific epithet ( represent species name ). 
  • For example - in Homo sapiens, sapiens is the specific epithet.
So, the correct option is 'Second word in the scientific name of a species'.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

In binomial nomenclature.

  1. Both in genus and species the first letter is capital

  2. Both genus and species are printed in italics

  3. Genus and species may be of same name

  4. Genus is written after the species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to the rules of binomial nomenclature, both the generic name and specific epithet must be printed in italics when typed or underlined when handwritten to indicate their Latin origin. The genus starts with a capital letter, but the species does not.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

In a binomial system of nomenclature when there are three words used for a species name _________________.

  1. Two words of the specific epithet are joined/hyphen

  2. First word of the specific epithet should be eliminated

  3. Whole specific epithet is to be rejected

  4. Another substitute specific epithet is to be chosen
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

With reference to botanical nomenclature, in type method ___________________.

  1. Type is for the name and not for the species

  2. Type is for the species and not for the name

  3. Type is for populations not either for names or species

  4. Type is for the genus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the type method of nomenclature, the type specimen serves as the permanent reference point for the application of a name, not the species itself.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

When Acetabularia is in uninucleate condition, then it is in _______________.

  1. Vegetative phase

  2. Reproductive phase

  3. Cyst formation stage

  4. Gamete formation stage
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acetabularia is a unicellular green alga. The uninucleate stage represents its vegetative growth phase before it undergoes reproductive processes.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Consider the following statements. The International code of botanical nomenclature prescribes that.
a. Every taxon or group of plants can bear only one correct name
b. A name could be applied to one or more than group of plants
c. The rank of species is basic in nomenclature
Which of the statements given are correct?

  1. $1, 2$ and $3$
  2. $1$ and $2$
  3. $2$ and $3$
  4. $1$ and $3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

All three statements are correct: each taxon has one correct name, a name is specific to a group, and the species is the basic unit of classification.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Which one of the following is NOT permissible according to the rules of botanical nomenclature?

  1. Autonym

  2. Basionym

  3. Tautonym

  4. Synonym
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Under the International Code of Nomenclature for algae, fungi, and plants, tautonyms, which are names where the genus and specific epithet are identical, are strictly not permissible. Autonyms, basionyms, and synonyms are recognized botanical terms.

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Linnaeus in his book "Species plantarum" (1753) proposed scientific names and Latin diagnosis of Mangifera indica, Saraca indica, Tamarindus indica, Rosa indica and Solanum nigrum. In the above case, how many species and genera respectively described by Linnaeus

  1. (1) 7,5

  2. (2) 5,7

  3. (3) 5,5

  4. (4) 4,5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Scientific description of an organism includes a two name or binomial system of Genus and species/specific epithet. The name of scientist who has described the genus and species is written in abbreviated form after the specific epithet. For example, Linnaeus is written as Linn, or L. All the Genera and species in the question have been described by Linneaus 

So, the correct answer is ' 5,5'