Biology

Plant Biology and Classification

1,473 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 economic importance of plants and animals uses of angiosperms importance and classification of angiosperms classification of angiosperms importance of plants

Following arrangement is correct from the point of view of decreasing biodiversity in angiosperms (N), fungi (F), pteridophytes (P) and algae (A).

  1. N $>$ F $>$ P $>$ A
  2. N $>$ F $>$ A $>$ P
  3. F $>$ N $>$ P $>$ A
  4. F $>$ N $>$ A $>$ P
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Biodiversity means the diversity of species of genetic variation within one species and of ecosystem angiosperms have the ability to live animals into transporting their pollen and seeds. Fungi, unlike plants and pteridophytes, are vascular plants that produce neither flowers nor seeds. Algae cannot synthesize their food and need an external source of nutrients. The order of decreasing biodiversity is N>F >A>P. Hence, the correct answer is option B,  N>F >A>P.

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

Plants were given Latin names because it is a.

  1. Simple language

  2. Common language

  3. Dead language

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The scientific names ensure that each organism has only one name. Description of any organism should enable the people (in any part of the world) to arrive at the same time. They also ensure that such a name has not been used for any other known organism. Dead language is a language that is no longer spoken by anyone as their main language.

So the correct option is "Dead language".

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

ICBN is?

  1. International Code of Biological Naming

  2. International Code of Botanical Nomenclature

  3. International Class of Biological Nomenclature

  4. International Classification of Biological Nomenclature
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

ICBN stands for International Code for Botanical Nomenclature (ICBN).

So the correct option is " International Code for Botanical Nomenclature".

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

The main objective of plant taxonomy is?

  1. To study the world's flora

  2. To provide a method for identification and nomenclature

  3. To provide Latin 'scientific' names for every group of plants in the world

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Classification is the process by which anything is grouped into convenient categories based on some easily observable characters. Hence, based on characteristics, all living organisms can be classified into different taxa. This process of classification is taxonomy. External and internal structure, along with the structure of cell, development process and ecological information of organisms are essential and form the basis of modern taxonomic studies. Hence, characterization, identification, classification, and nomenclature are the process that is basis to taxonomy.

So the correct option is "To provide a method for identification and nomenclature".

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

In which of the following, scientific name, family and common name are correctly mentioned?

  1. Scientific name-Batrachospermum, Family-Rhodophyceae, Common name-Frog's spawn algae

  2. Scientific name-Spirogyra, Family-Chlorophyceae, Common name-Water net

  3. Scientific name-Lycopodium, Family-Lycopodiaceae, Common name-Sanjeevani

  4. Scientific name-Selaginella, Family-Lycopodiaceae, Common name-Little club moss
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Batrachospermum is the botanical name for frogs spawn algae, while the other options have incorrect scientific names.

So, the correct option is 'Scientific name-Batrachospermum, Family-Rhodophyceae, Common name-Frog's spawn algae'.

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. The first word is biological name represents the genus.

  2. The first word denoting the genus starts with a capital letter.

  3. Both the words in a biological name, when handwritten, are separately underline.

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

Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name; more informally it is also called a Latin name. The first part of the name – the generic name – identifies the genus to which the species belongs, while the second part – the specific name or specific epithet – identifies the species within the genus.


So the correct option is 'Biological names are generally in Greek and written in italics.'

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

A homonym is 

  1. Two or more names for the same taxon.

  2. Species name repeats the generic name.

  3. Identical name of two different taxa.

  4. Name given to a taxon in local language.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A homonym is the identical name of two different taxa. 

The rule in the International Code of Zoological Nomenclature is that the first such name to be published is the senior homonym and is to be used (it is "valid") and any others are junior homonyms and must be replaced with new names.
For example, Cuvier proposed the genus Echidna in for the spiny anteater.
However, Forster had already published the name Echidna in for a genus of moray eels. Forster's use thus has priority, with Cuvier's being a junior homonym.
So, the correct option is 'Identical name of two different taxas'.

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

Common names are 

  1. Non-specific

  2. Scientific

  3. Morphological

  4. Universal
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • The local name of a particular plant or animal is non-specific and not sufficient for identification because they can have numerous local names according to regional languages.
  • For example, The lion is called lion in English and French, sher in Hindi, Leon in Spanish etc. 
  • So, there arises a need for a universal name that can be recognized by all the countries and regions. This lead way to the issuing of binomial names to plants and animals.
Hence, the correct option is 'Non-specific'.
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?

  1. When written by hand, the names are to be underlined.

  2. Biological names can be written in any language.

  3. The first word in a biological name represents the genus name and the second is a specific epithet.

  4. The names are written in Latin and are italicised.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The system of bionomial nomenclature was developed by Linnaeus. There were certain rules which were set up for writing the scientific names. They are as follows:

1. Each organism is given only one name consisting of two words- generic and specific.
2. The scientific name is printed in italics. It is underlined in handwritten description. 
The generic name is written first. It is followed by specific name and the name of discoverer in full or abbreviation. 
4. The name of the author is written in Roman script.
5. The original names were taken from Latin and Greek languages. New names are derived from latin language as Latin is a dead language and therefore it will not change in form or spelling with the passage of time. 
Thus, the correct answer is option B. 

Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification
Hierarchy Hibiscus
Kingdom Plantae
Division Angiosperms
Class Dicotyledonae
Order ...................
Family Malvaceae
Genus Hibiscus
Species ....................

  1. Malvales, rosa-sinensis

  2. Sapindales, indica

  3. Rosales, rosa

  4. Rosales, Hibiscus rosids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Given table describes classification of 'China rose'. 
  • Binomial name for China rose is 'Hibiscus rosa-sinensis'. Here, rosa-sinensis represents the name of species.
  • It belongs to order 'Malvales'.
  • So, the correct option is 'Malvales, rosa-sinensis'
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Which of the following is not a rule for binomial nomenclature?

  1. The name of categories higher than the name of genus are not printed in italics

  2. Binomial epithet consists of two Latin and one Roman word

  3. Generic and common names can never be the same

  4. The name of the discover is given after scientific name either in full or in abbreviated form
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Providing two words in the scientific name is called Binomial nomenclature.
In the binomial nomenclature, first word generic name and second word is species name.
So, the correct option is 'Binomial epithet consists of two Latin and one Roman word'.

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

According to ICBN rules, families and subfamilies names are?

  1. Printed in italics

  2. Never written in bold letters

  3. Based on the name of type genus

  4. Must having suffix "ceae" and "ideae" respectively
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
According to ICBN rules the families and subfamilies should have suffix 'ceae' and 'ideae' 
For example: Family- Fabaceae, sub family -papilionoideae (Rudd)
So, the correct answer is 'Must having suffix "ceae" and "ideae" respectively
Multiple choice biology classification of living organisms binomial nomenclature nomenclature of organisms naming of the organisms nomenclature in classification

Scientific name of organism with similar species and subspecies names denote.

  1. Synonyms

  2. Tautonyms

  3. Autonyms

  4. Homonyms
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A tautonym is a logical name of an animal variety in which the two sections of the name have a similar spelling, for instance, rattus. The initial segment of the name is the name of the class and the second part is alluded to as the explicit sobriquet in the International Code of Nomenclature for green growth, organisms, and plants and the explicit name in the International Code of Zoological Nomenclature.

So, the correct option is 'Tautonyms'.

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

The publication of Linnaeus "Species plantarum" is the starting point for nomenclature of

  1. Moss

  2. Spermatophyta

  3. All organisms

  4. Fungi
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • "Species Plantarum", a book written by Carolus Linnaeus (Swedish naturalist), contains nearly 5900 species of plants and it is the starting point for the nomenclature of flowering plants (spermatophytes) and ferns i.e, plants. 
  • Species Plantarum was the first botanical work to consistently apply the binomial nomenclature system for the large group of plants.
So the correct option is spermatophyta.