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The Living World Test - 17

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The Living World Test - 17
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The science of naming plants is known as
    Solution
    The art of naming an object is, in fact, a science called nomenclature. Binomial nomenclature is followed worldwide to identify an organism. Every organism has a scientific name, which is a combination of genus and species. Most of these names are in the Latin language. For example, the scientific name of human is Homo sapiens and that of frog is Rana tigrina.
  • Question 2
    1 / -0
    Binomial system of nomenclature means that every organism has___________
    Solution
     C Linnaeus, the father of taxonomy, introduced the binomial system of nomenclature. He dealt about this in the 10th edition of his book 'Systema Naturae' which was published in 1785.
    This is a system of providing organisms with distinct scientific names which consist of two words, the first one indicating a generic name (Genus). The first and second together form a specific name (Species). These two words are in Latin or Latinized if derived from other languages.
    Genus is a common noun and starts with a capital letter. It indicates the name of a group. In the specific name, the second word is like an adjective and begins with a small letter excepting the cases when it denotes proper nouns like the name of a person, place or the like. It may then, start with a capital letter.
    The names when written should be underlined to indicate their Latin origin. In the printed form, they should be italicized.
    The name of the author who has first described the plant in scientific journals may be appended in full or abbreviated form. For example - the botanical name of mango is Mangifera indica Linn. All three comprise binomial nomenclature.
    The generic name is one for all species whereas the species name is variable. For example - Ficus bengalensis, Ficus religiosa, Ficus glomerata, which represent banyan, peepul and fig trees respectively. All have one generic name Ficus but their species names are F.bengalensis, F.religiosa, F.glomerata.
  • Question 3
    1 / -0
    The place for keeping and studying dry plants is called
    Solution
    A herbarium is a collection of preserved plant specimens. These specimens may be whole plants or plant parts. These will usually be in a dried form mounted on a sheet but depending upon the material, may also be kept in alcohol or other preservative. The specimens are stored with a data label. The label describes useful information including the plants's Latin name, the origin of the collection, the date of collection and the name of the collector.
    Herbariums are essential for the study of plant taxonomy, the study of geographic distributions and the stablizing of nomenclature. Specimens housed in herbaria may be used to identify the flora of an era. Herbaria also preserve a historical record of change in vegetation over time. Environmental scientists make use of such data to track changes in climate and human impact. Herbaria may also be a repository of viable seeds for rare species.
  • Question 4
    1 / -0
    Match the following.
    AB
    a. Kingdom(i) Amphibia
    b. Phylum      (ii) Animalia
    c. Class(iii) Chordata
    (iv) Frog
    Solution
    Animalia is a kingdom, Chordata is a phylum which belongs to the kingdom Animalia and phylum Chordata includes the class Amphibia.
    So the correct answer is option B.
     
  • Question 5
    1 / -0
    Living herbaria is
    Solution
    The systematically arranged collection of different types of dried plants is called herbarium. It helps in the identification of plants and in the preservation of changes in vegetation over the time. Botanical garden is the collection of living plants. Here, plants are cultivated and preserved for the study and research purposes. So, the correct option is B.
  • Question 6
    1 / -0
    Several genera resembling one another in their major anatomical and reproductive characters are placed together in
    Solution
    The given hierarchy of classification can be described as :
    1. Species: Species is the lowest category regarded as the basic unit of classification. It is a group of similar individuals which resemble with each
    other in morphology, and capable of interbreeding.
    2. Genus: A genus is a group of closely resembling species having a common ancestry.
    3. Family: A family represents a larger group of closely related genera resembling each other in anatomical and reproductive features. It is composed of one or more genera.
    4. Order: An order is a group of closely related families. For example, the family Felidae (that includes cats) and the family Canidae (that includes dogs) are assigned to the order carnivore.
    So, the correct option is 'Family'.
  • Question 7
    1 / -0
    Species is
    Solution
    According to Ernst Mayer biological definition of species, a natural population of organisms who resemble each other in morphological and reproductive ways to be able to produce a fertile offspring and interbreed freely is termed as species.
    So, the correct option is 'Population or populations of interbreeding individuals'.
  • Question 8
    1 / -0
    ............... means the diversity of life forms.
    Solution
    The term biodiversity explains the diverse forms of life. The microbes, plants, animals and the other organisms have many different species. They are classified into different groups on the basis of their similarities and differences. In the plant's group itself, there are many diverse forms of plants which contributes to the diversity in a region. 
    Thus, the correct answer is option C. 
  • Question 9
    1 / -0
    The term species was given by 
    Solution
    In 1686, John Ray introduced a non-evolutionary biological concept. To him, species were distinguished by always producing the same species, and this was fixed and permanent, though considerable variation was possible within a species.
    So, the correct option is 'John Ray'.
  • Question 10
    1 / -0
    The category of family is between
    Solution
    • A family is a group of the related genus in between Order and Genus.
    • They have still less number of similarities as compared to genus and species.
    • Families are characterized on the basis of both vegetative and reproductive features of plant species. Example: Three different genera; Solanum, petunia and the Torah is placed in the family Solanaceae.
    So, the correct answer is 'Order and Genus'
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