Tag: hierarchy of classification

Questions Related to hierarchy of classification

Virus belongs to the kingdom ___________.

  1. Protista

  2. Monera

  3. Animalia

  4. None of the above


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?

  1. Description of the organism

  2. Identification of the organism

  3. Nomenclature of the organism

  4. Classification of the organism


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

  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


Correct Option: A

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

  1. Species

  2. Genus

  3. Order

  4. Family


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?

  1. Bacteria

  2. Lichens

  3. Cyanobacteria

  4. Viruses


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'

_________ is the branch of science dealing with identification, nomenclature and classification of organisms.

  1. Morphology

  2. Anatomy

  3. Ecology

  4. Taxonomy


Correct Option: D
Explanation:

Taxonomy (taxis-arrangement, nomos-law) is defined as the science dealing with identification, nomenclature and classification of organisms. The term taxonomy was given by de Candolle $(1813)$.

Among the following organisms which is a completely non-parasitic form?

  1. Sea anemone

  2. Tapeworm

  3. Leech

  4. Mosquito


Correct Option: A
Explanation:

Sea anemone is not parasitic It shows mutualism with hermit crab. Tapeworm is an endoparasite while leech and mosquito are exoparasites.

Water is the second most important factor influencing life of organisms because  

  1. it makes major part of an organism's body

  2. productivity of plants depend upon availability of water

  3. life on Earth originated in water

  4. Both (a) and (b)


Correct Option: D
Explanation:

Water makes the major part of an organism's life next to temperature. It s an important factor which influences the life of organisms. The productivity and distribution of land plants are dependent upon availability of water. Water is required for growth and development of plants. 

Organisms that can tolerate a wide range of salt concentration are termed as 

  1. stenosalline

  2. stenothalne

  3. euryhaine

  4. eurysaline


Correct Option: C
Explanation:

Euryhaline organisms are able to tolerate a wide range of salt concentration (or salinaties). E.g. Poecillia sphenops is a fishasdu that can live fresh water, brackish water or salt water. 

How many of these are correctly matched pairs?
A. Mycorhizae $\rightarrow + +$
B. Cattle egret & grazing cattle $\rightarrow + 0$
C. Cuckoo $\rightarrow$ Amensalism
D. Pisaster & Starfish.

  1. A, B, C are correct

  2. All are correct

  3. C & D are incorrect

  4. A, B, D are correct


Correct Option: D
Explanation:

Amensalism involves harm of one organism and unaffected another organism in a two organism relationship.

Cuckoo shows Commensalism by Brood Parasitism.
So, the correct option is 'A, B, D are correct'.