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The Living World Test - 19

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The Living World Test - 19
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Each unit of a category of classification can be called 
    Solution
    A category is the rank of a taxon in the classification system. Taxon represents the unit for those belonging to that category.
    For example snake, crocodile and turtle are all examples of reptiles. They belong to class 'Reptilia' which represents a category in which snake, crocodile, and turtle are different units as a taxon.
    So, the correct option is- 'Taxon'.
  • Question 2
    1 / -0
    Nicotiana is a
    Solution
    • Nicotine is a genus under family Solanaceae. It includes many species like Nicotiana tabacum, Nicotiana africana.
    • Subspecies is taxonomic category below genus and species while variety is category below subspecies.
    So, the correct option is 'Genus'.
  • Question 3
    1 / -0
    An organism is in the same class but not in the same family. It may belong to same 
    Solution
    An order includes many related families and class includes many related orders.
    So, the correct option is 'Order'.

  • Question 4
    1 / -0
    Which of the following is not a correct hierarchical order?
    Solution
    The phylum is the highest level while the genus is lowest among all the hierarchical categories given in options.  
    Class ranks higher than family and order. The class is followed by order and family successively.
    So, the correct option is 'Family, order, class'.

  • Question 5
    1 / -0
    Which one of the following is the hierarchical sequence ?
    Solution
    Hierarchy is the arrangement of organisms in a definite sequence of categories depending upon their relative dimensions. The hierarchy include seven categories: kingdom, phylum, class, order, family, genus and species. The categories are arranged in a descending sequence. The hierarchical system of classification was introduced by Linnaeus.
    Thus, the correct answer is option A. 
  • Question 6
    1 / -0
    The system of giving one name to the individual is
    Solution
    The uninominal system is the system for naming entities in which the name for each entity consists of only one word. It differs from the binomial system employed at species level where each individual organism has a name with two components i.e. species and genus.
    The prefix 'uni' is used to denote 'one'.
    So, the correct option is 'Uninomial system'.
  • Question 7
    1 / -0
    Sugarcane is
    Solution

    Saccharum officinarum, commonly known as sugarcane is a large, strong, growing species of grass belonging to family Poaceae. It was originated in New Guinea and it is a perennial plant. It is cultivated in tropical and subtropical countries worldwide for the production of sugars and other products. It is used for the production of sugar, ethanol. the byproducts are used for feeding livestock. So, the correct answer is 'Saccharum officinarum'.

  • Question 8
    1 / -0
    Botanical name of Gram is
    Solution

    Cicer arietinum, commonly known as gram, Bengal gram, chickpea is an annual legume belonging to the family Fabaceae. Chickpea seeds are high in protein. It is one of the earliest cultivated legumes. Gram is used as animal feed and also for human consumption. Hence, the botanical name of the gram is Cicer arietinum. So, the correct answer is 'Cicer arietinum'.

  • Question 9
    1 / -0
    Plant preservation centre in which the collected plants are preserved as dry specimens, according to any recognised system of classification is called 
    Solution
    A herbarium is a collection of pressed, dried and preserved plants mounted on paper sheets, properly labelled, systematically arranged and available for reference or study. The primary role of herbaria is to prepare pressed, dried plants, store them in cabinets, protect them from attacks by fungi and insects and offer them for study when needed. 
    A museum is a building used for the preservation, storage and exhibition of inanimate objects which illustrate the human or natural history. It is to educate the people about animal life and to create interest and love for animals. Extinction of animals wold disturb the balance of nature and can lead to the end of human race too. 
    A botanical garden is a place where plants from various groups are grown for scientific study, conservation, public education, aesthetics and recreation. A botanical garden usually houses a library, laboratory, herbarium and museum  and frequently offers teaching and training facilities also. 
    Flora is the term used for all the plants.
    Thus, the correct answer is option B. 
  • Question 10
    1 / -0
    Which is the highest in the hierarchy of toxonomic categories ?
    Solution
    The various categories used in classification an be arranged in a hierarchy that is ranked one over the other. The hierarchy indicates the various levels of kinship. The hierarchy of major categories from highest towards lowest is given below:
    • Kingdom
    • Phylum
    • Class
    • Order
    • Class
    • Family
    • Genus
    • Species
    Thus it is clear from the hierarchy that kingdom is the highest category and species is the lowest category. Out of the given options, class lies at the highest level and is a group of related orders.
    Thus, the correct answer is option D. 
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