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The Living World Test - 46

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The Living World Test - 46
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  • Question 1
    1 / -0
    Which one of the following sequences shows the correct hierarchy of classification, going from the most inclusive to the least inclusive?
    Solution
    Most inclusive means the taxons which includes most variety of organisms or plants despite of differences.
    Thus, it should start from the higher taxon- that is Domain and end with the least inclusive - that is species (with maximum similarity).
    The sequential order is:
    Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
  • Question 2
    1 / -0
    A related group of genera comprise
    Solution
    A related group of genera comprises a family. In biological classification, a family is a taxonomic rank between order and genus. A family may be divided into one or more sub-families, intermediate ranks above the rank of genus.
    A class contains one or more orders. Intermediate minor rankings are not shown. A taxonomic rank used in the classification of organisms and recognized by the nomenclature codes.
    In the biological classification of organisms, a class is a major taxonomic rank below the phylum (or division) and above the order.
    In biology, a phylum is a taxonomic rank below kingdom and above class. 
    A division: A taxon at the rank of the division. The second highest taxonomic classification for the kingdoms Plantae (plants) and fungi, between kingdom level and class level.
  • Question 3
    1 / -0
    In the early 1700's, the classification system used was
    Solution
    • The term Nomenclature means the scientific naming of organisms according to an established system. In earlier days common vernacular names were used which generally changes with change of language. Later in the haunt of one common internationally accepted name for a species, scientific names (Technical names) have been introduced in the form of Polynomial, binomial and trinomial systems of nomenclature.
    • In the early 17th century, taxonomists started using a string of descriptive Latin words to designate a species. For example, in the herbal of Clusius (1583) a species of willow is named as Salix pumila angustifolia altera.
    • Polynomial nomenclature was discarded for the two main reasons that it was lengthy and difficult to remember, it often varies from place to place, scholar to scholar based on the characters chosen by them.
    So the correct option is Polynomial system.
  • Question 4
    1 / -0
    In the current taxonomic system, families are grouped into
    Solution
    In the current taxonomic system, families are grouped into orders.
    In biological classification, the order is :
    • A taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus and species, with order fitting in between class and family. An immediately higher rank, super-order, may be added directly above order, while suborder would be a lower rank.
    For example, The Juglans (walnut) and Hickory trees belong to the family Juglandaceae (or walnut family), which is placed in the order Fagales.
  • Question 5
    1 / -0
    A taxon consisting of the most closely related species is known as
    Solution
    Closely related species are grouped under genus. For example, Panthera leo, Panthera tigris. Panthera leo is a lion and Panthera tigris is a tiger. Both are different species but are closely related. Thus, grouped under the genus, Panthera.
    So, the correct answer is option C.
  • Question 6
    1 / -0
    In printed scientific names, only the ............... is capitalized.
    Solution
    In printed scientific names, only the genus name is capitalized. Both, the genus and the species names should be italicized as well. For example, Homo sapiens
    If written, it should be underlined separately where the second part is species name in small letters. For example, Homo sapiens.

  • Question 7
    1 / -0
    All living organisms are classified into broad categories called?
    Solution
    Whittaker classified the living organisms into broad categories known as kingdoms. The kingdom is further classified into sub-groups at various levels namely phylum, class, order, family, genus, and species. 
    Thus, the correct answer is option A. 
  • Question 8
    1 / -0
    Biologists currently recognize ................... kingdom classification.
    Solution
    Biologists make use of a recent classification system that has five kingdoms. This was proposed by R.H. Whittaker.
    Three kingdom classification was in existence in the mid-1970s which has three domains: Bacteria, Archaea and Eukaryota.
  • Question 9
    1 / -0
    At the present time, scientists have named approximately .......... species.
    Solution
    Scientists have continuously been identifying new species of organisms and the as of now around 15 lakh species have been identified and named. They are named using a scientific system of nomenclature according to the rules laid down by ICBN and ICZN in order to prevent any confusion.
    So, the correct answer is, '1,500,000'.
  • Question 10
    1 / -0
    .................... include all the organisms that are similar enough to breed and perpetuate.
    Solution
    By separating organisms on the basis of a hierarchy of characteristics into smaller and smaller groups, we arrive at the basic unit of classification, which is a ‘species’.
    Broadly, a species includes all organisms that are similar enough to breed and perpetuate.
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