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The Living World Test - 25

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The Living World Test - 25
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following is not a category?
    Solution
    Glumaceae is the term which is used to describe the collection of the all the plants in the grass family. This term was used by Bentham and Hooker. The categories are the different ranks in the hierarchical classification. The categories in the descending order are Kingdom, Phylum, Class, Order, Family, Genus, and Species. Glumaceae is not defined as a category. 
    Thus, the correct answer is option D. 
  • Question 2
    1 / -0
    Which covers the largest number of organisms?
    Solution
    In biological classification, that includes the taxonomic hierarchy, Phylum is the highest in order after Kingdom. It includes several classes. 
    Thus answer is option (C) - 'Phylum'.
  • Question 3
    1 / -0
    Descending arrangement of categories is called as
    Solution
    The hierarchy of binomial classification follows a descending order- Kingdom, Phylum, Class, Order, Family, Genus, and Species.
    So, answer is - '    Hierarchy'.
  • Question 4
    1 / -0
    Nicotiana is a _____________
    Solution
    Nicotiana tobacum is the scientific name for the tobacco plant. The scientific name of any organism on the basis of binomial nomenclature consists of two epithets in which the first epithet is the genus name and the second epithet is the species name. The Nicotiana represents the genus name. 
    Thus, the correct answer is option D. 
  • Question 5
    1 / -0
    Which of the following two morphologically similar population are intersterile?
    Solution
    Sibling species are species, that are indistinguishable morphologically or can be distinguished but with difficulty. But these cannot interbreed to produce fertile hybrid. They have the same phenotype but may not have same genotype. Thus, the correct option is 'Two sibling species'
  • Question 6
    1 / -0
    The suffix- 'oideae'  is used for
    Solution
    In botany,  the rank are used for the classification of the organisms on the basis of heirarchy. The subfamily is used for the plants for the further division of the family. In the year 1993, the International Botanical Congress accepted the designation subfamily and the term 'oideae' is used as a suffix. For example, the term oideae in Asteroideae which is the subfamily of family Asteraceae. 
    Thus, the correct answer is option D. 
  • Question 7
    1 / -0
    Distinction of prokaryota and eukaryota is mainly based on
    Solution
    Prokaryotes lack membrane bound organelles including the nucleus, chloroplast, mitochondria etc., unlike that of the prokaryotes. The chromosome of a prokaryote is usually circular lacking centromeres and introns. While the eukaryotic chromosome is linear with centromere and kinetochores. They have exons intervened by introns. 
    Thus both differ vastly in their basic cellular mechanisms especially in transcription and translation.
    So, the answer is option (D)- 'All of the above'.
  • Question 8
    1 / -0
    Which of the following is a taxon?
    Solution
    • Taxon represents taxonomic group of any rank. Each individual belongs to a hierarchy of taxa which are assigned taxonomic ranks. The seven essential ranks of taxa in descending order are kingdom, division/phylum, class, order, family, genus and species. 
    • Name of a species refers to group of potentially interbreeding, morphologically similar individuals. 
    • A genus is a taxonomic rank that constitutes single species of monophyletic group of species that share a sum total of characters, though they cannot interbreed. 
    • A group of closely related classes, that share some common morphological features but are reproductively incompatible, constitutes a phylum. 

    • Thus, names of species, genus and phylum represent taxa of a particular hierarchy which makes option D correct. 
  • Question 9
    1 / -0
    Characteristics which delimit a family are more general than those which delimit a
    Solution
    • Characteristics which delimit a family are more general than those which delimit a genus as the number of similar characteristics increases from species to kingdom.
    • The term Genus comes from the Latin genus, a noun form cognate with gignere (to bear). Linnaeus popularized its use in his 1753 Species Plantarum.
    • However the French botanist Joseph Pitton de Tournefort is considered as "The founder of the modern concept of genera".
    So the correct answer is 'Genus'.
  • Question 10
    1 / -0
    Who published the book 'Species Plantarum' and provided a basis for classification of plants?
    Solution
    'Species Plantarum' is a book by Carl Linnaeus, originally published in 1753, which lists every species of plant known at the time, classified into genera.
    Answer is - '    Carolus Linnaeus'.
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