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Systems of classification - class-XI

Description: systems of classification
Number of Questions: 28
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Tags: systematics of living world biodiversity, classification and conservation the living world diversity of living world living world characteristics and classification of living organisms taxonomy and systematic botany zoology living world and classification of microbes classification of plants biological diversity animal classification diversity in living organisms classification of animals five kingdom classification living world of animals -diversity in living organism- kingdom animalia diversity in living organisms-classification botany evolution and biodiversity basis of classification biology biodiversity and classification why classification?
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A taxonomic category refers to ____________.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. The basic unit of classification

  2. A rank or level in a taxonomic hierarchy

  3. A group of related organisms able to interbreed

  4. A group of related organisms but unable to interbreed freely

Show answer
Correct Option: B
Explanation:

Each category is referred to as a unit of classification or rank and is commonly called taxon. A taxon is a general term for grouping in a systematic classification. A taxon refers to a group of similar and genetically related individuals having certain characters different from other groups.
Correct answer is option B.

In a taxonomic hierarchy, genus is interpolated between ______________.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Kingdom and Class

  2. Phylum and Order

  3. Order and Species

  4. Family and Species

Show answer
Correct Option: D
Explanation:

In biological classification, the taxonomic rank genus is the relative level of a group of genus-group names and species-group names. Therefore, the genus is interpolated between family and species.

So, The correct answer is D.

In a taxonomic hierarchy, family is interpolated between ________________.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Kingdom and Class

  2. Class and Order

  3. Order and Genus

  4. Class and Genus

Show answer
Correct Option: C
Explanation:
In biological classification, the taxonomic rank family is the relative level of a group of order-group names and genus-group names. Therefore, the family is interpolated between order and genus.
So, The correct answer is C.

Two animals belong to the same kingdom but different classes. They may belong to the same _______________.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Phylum

  2. Order

  3. Division

  4. Species

Show answer
Correct Option: A
Explanation:

The Kangaroo and Monkey...Belong To the Kingdom animalia..of Phylum Chordata.-class mammals of sub class Metatheria(kangaroo) and sub class eutheria (monkey).
Correct answer is option A.

Select the incorrect statement out of the following.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. All animals belonging to various phyla are assigned to the Kingdom Animalia

  2. As we go higher from species to kingdom, number of common characteristics goes on increasing

  3. Different classes comprising fish, amphibians, reptiles, birds and mammals together constitute the Phylum Chordata

  4. Plant order Polymoniales includes the families like Solanaceae and Convolvulaceae based on the vegetative and floral characters

Show answer
Correct Option: B
Explanation:

Correct answer is B.
As we go higher form species to kingdom, number of common characteristics goes on decreasing.

Select the mismatched pair.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Panthera leo - Belongs to Class Mammalia

  2. Musca domestica - The common house lizard, a reptile

  3. Entamoeba coli - Commonly occurring protozoan in human intestine

  4. Solanum tuberosum - A dicotyledonous plant

Show answer
Correct Option: B
Explanation:

B is the right answer.
Musca domestica --- is Housefly. Phylum Arthropoda.

Choose the correct statements from following:
A. Taxonomic hierarchy include seven obligation categories.
B. Haeckel introduced the taxon phylum.
C. Three-domain classification was introduced b Carl Woese.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. A & B

  2. B & C

  3. A & C

  4. All

Show answer
Correct Option: A

Linnaeus wrote artificial classification of plants in his book. What is the name of his book?

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Species plantarum

  2. Systema naturae

  3. Genera plantarum

  4. Origin of species

Show answer
Correct Option: A

The general Agave and Yucca were once placed in two different families, Amaryllidaceous and Liliaceous respectively. However, now both these genera are transferred to the family Agavaceae because of their similarity in.

zoology why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. Anatomy

  2. Pollen

  3. Geographical distribution

  4. Karyotypes

Show answer
Correct Option: A

Choose the correct answers from the alternatives given.
The system of plant classification proposed by Carolus Linnaeus was artificial because:

botany why classification? classification hierarchy hierarchy of classification different types of classifications modern classification system

  1. he was not a naturalist

  2. his classification was based on similarities and differences in floral and other morphological characters only

  3. his classification was based on evolutionary relationships

  4. he took into account the physiological relationships along with morphological observations

Show answer
Correct Option: B

Multicellular eukaryotic organism with holophytic mode of nutrition belong to how many kingdoms in Whittaker system?

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. One

  2. Two

  3. Three

  4. Five

Show answer
Correct Option: A
Explanation:

In Whittaker's five kingdom system of classification, only kingdom Plantae have organisms with a multicellular eukaryotic organism with holophytic nutrition. The organisms which are able to synthesize food by photosynthesis are said to have holophytic nutrition. 


So, the correct option is ' one'.

Which kingdom of Whittaker are not well defined?

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Monera

  2. Protisa

  3. Fungi

  4. Animalia

Show answer
Correct Option: A
Explanation:

Monera is the most primitive kingdom mentioned by R.H.Whittaker. It is not well defined among all five kingdoms- Monera, Protista, Fungi, Plants, and Animalia.


So, the correct answer is 'Monera'.

Whittaker is famous for

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Two kingdom classification

  2. Four kingdom classification.

  3. Five kingdom classification.

  4. Distinguishing in bacteria and blue green algae.

Show answer
Correct Option: C
Explanation:

The two kingdom classification system was given by Carlous Linnaeus in 1758, who classified living things into two kingdoms: Animal Kingdom (mobile and heterotrophic) and Plant Kingdom (fixed, stationary in the soil, autotrophic). These were then divided into classes and the classes into phyla for animals and divisions for plants. R.H Whittaker proposed the five kingdom classification in 1969, in which all living organisms are divided into five kingdoms based on their complexity of cell structure, complexity of organism’s body and mode of nutrition. The five kingdoms are Monera (prokaryotic BGA and bacteria), Protista (Eukaryotic unicellular organisms; algae and protozoa), Fungi, Plantae and Animalia. The four kingdom classification concept was given by Haeckel who divided living organisms into four kingdoms namely Monera, Protista, Metaphyta and Animalia. BGA and bacteria differ in their kind or reserve food, mode of nutrition, movement and type of photosynthetic pigments. Thus, the correct answer is option C.

According to Whittaker, kingdom Monera includes

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Unicellular eukaryotes

  2. Prokaryotes

  3. Slime molds and protozoa

  4. Multicellular and eukaryotes

Show answer
Correct Option: B
Explanation:

The five kingdom classification was proposed by R. H. Whittaker in the year 1969. The kingdom Monera is comprised of unicellular prokaryotic organisms. This group contains the bacteria and the cyanobacteria species. The other four kingdoms, protista, fungi, plantae and animalia are composed of all the eukaryotic organisms. 

Thus, the correct answer is option B. 

Five kingdom scheme to classify living beings has been proposed by 

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. J. B. S Haldane

  2. G. G. Simpson

  3. E. Mayr

  4. R. H. Whittaker

Show answer
Correct Option: D
Explanation:

R.H.Whittaker was an American plant ecologist who proposed five kingdom scheme. J.B.S.Haldane was a British Indian scientist renowned for his innovative contributions in statistics and biostatics. George Gaylord Simpson was a palaeontologist. Ernst Mayr was a biologist.

The correct answer is D. 

Which of the following is not one of the five kingdoms of R. H. Whittaker's classification system?

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Animalia

  2. Monera

  3. Protista

  4. Chordate

Show answer
Correct Option: D
Explanation:

Robert H. Whittaker in 1969, proposed five kingdom system of classification of organisms. The following three criteria were used for classification:

1) Complexity of cell structure
2) Complexity of the organism's body
3) Mode of nutrition.
Five kingdoms of Whittaker's classification include Monera, Protista, Fungi, Plantae, Animalia. Hence option D is the correct answer. 

Kingdom in which boundaries are not well defined includes _____________.

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Sole organisms as bacteria

  2. Organisms live as predators or parasites also

  3. Organism primarily terrestrial

  4. Achlorophyllous, spore producing organisms with loose tissue level today organisation

Show answer
Correct Option: A

Five kingdom system of classification suggested by R.H. Whittaker is not based on.

biology why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Mode of reproduction

  2. Mode of nutrition

  3. Complexity of body organisation

  4. Presence or absence of well defined nucleus

Show answer
Correct Option: A
Explanation:
  • R. H. Whittaker's five-kingdom classification is mainly based on Cell structure, Thallus organization,  Mode of Nutrition, Mode of reproduction and Phylogenetic relationship.

So the correct option is 'Presence or absence of a well-defined nucleus.'

Read the following statements and find out the correct statement:-
(a) Human being can move limbs, jaws,eyelids and earpinna etc.
(b) Streaming of protoplasm in unicellular organism like amoeba is a simple form of movement
(c) Movement of significant feature of living beings.
(d) movement of cilia, flagella are shown by many organism.

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. a,b,c

  2. b,c,d

  3. c,d,a

  4. d,a,b

Show answer
Correct Option: D
Explanation:

Human beings can move their limbs, jaws, eyelids, and ear pinna etc. These movements are referred to them by the presence of voluntary muscles and a framework of the body that allows Movement in such possible ways.

Streaming of Protoplasm in a unicellular organism like Amoeba is a simple form of movement as it allows them to move in a media.
Movement of cilia, flagella are shown by many organisms ranging from algae, protozoa to certain animals in the animal kingdom.
However, the movement is not a significant defining feature of living beings, for example, the sponges are living beings however majority of them are immovable plants also show similar characteristics.
So the correct answer is 'd, a, b' .

Different organisms belonging to different orders are placed in a single class due to the fact that?

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. They have all similar morphological and reproductive characters

  2. They have similar place of origin

  3. They share a common habitat

  4. They have few similar or common characters

Show answer
Correct Option: A

For identifying organisms through key usually.

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Two contrasting characters are used

  2. One similar character is studied

  3. Two are more similar characters are used

  4. Only one statement called lead is used

Show answer
Correct Option: A

Algae, green plants and photosynthetic bacteria are:

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Autotrophic organisms

  2. Heterotrophic

  3. Decomposers

  4. Consumers

Show answer
Correct Option: A

Skin of organisms in class Cyclostomata is ________.

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Hard

  2. Soft

  3. Spiny

  4. Scaly

Show answer
Correct Option: B
Explanation:

Organisms of class: Cyclostomata belongs to division: Agnatha. Their skin is soft smooth, containing unicellular mucous gland but no scales.

Virus belongs to the kingdom ___________.

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Protista

  2. Monera

  3. Animalia

  4. None of the above

Show answer
Correct Option: D
Explanation:

Five kingdom classification was given by R.H. Whittaker. Classification of viruses has always been difficult as they are said to be threshold of life. Thus viruses did not find any position in five kingdom classification.

First step in taxonomy is?

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Description of the organism

  2. Identification of the organism

  3. Nomenclature of the organism

  4. Classification of the organism

Show answer
Correct Option: B
Explanation:

First step is taxonomy is identification of the organism. Identification is the finding of correct name and place of an organism according to some approved system of classification.

Choose the correct answers from the alternatives given.
The struggle for existence is a consequence of

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. each organism leaving more offspring than needed to replace itself

  2. the inevitable difficulty of coping with climatic conditions

  3. innate competitive tendencies

  4. territories and dominance hierarchies

Show answer
Correct Option: A

The basic unit upon which the systems of classification are based is?

botany why classification? modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Species

  2. Genus

  3. Order

  4. Family

Show answer
Correct Option: A
Explanation:

According to Linnaeus' system, each species is given a unique, two-part name called a binomen. Each binomen consists of a genus and species epithet. The species is the basic unit of classification and the only 'natural' one.
Correct option is option A.

Which one of the following does not find a heterotrophs place in five kingdom system of classification?

biology living world and classification of microbes modern classification system traditional method of animal classification salient features of five kingdoms classification hierarchy hierarchy of classification

  1. Bacteria

  2. Lichens

  3. Cyanobacteria

  4. Viruses

Show answer
Correct Option: D
Explanation:

Viruses are considered to be acellular as they do not have a defined cell wall, cell membrane, nucleus or nucleoid, cytoplasm and cellular organelles. For this reason, they cannot perform their metabolic activities on their own and are obligately dependent on the host cell machinery. Therefore, they do not find a place in the five-kingdom classification system. 

A. Bacteria are classified under Kingdom Monera as they have a prokaryotic cell.
B. Lichens are grouped under Kingdom Fungi.
C. Cyanobacteria are photosynthetic prokaryotes grouped under Kingdom Monera.
D. No kingdom is ascribed to the viruses.
Hence, the correct answer is 'Viruses'

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