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The Living World Test - 29

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The Living World Test - 29
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Weekly Quiz Competition
  • Question 1
    1 / -0
    The botanical name of "Indian rai" is
    Solution
    Brassica nigra is the botanical name of black mustard. 
    Brassica juncea is the botanical name of Indian mustard or green mustard or 'Indian rai'. 
    Brassica alba is the botanical name of white mustard. 
    Brassica campestris is the botanical name of turnip. Thus, option B is correct.
  • Question 2
    1 / -0
    The largest herbarium in India is located in
    Solution
    The Acharya Jagadish Chandra Bose Indian Botanic Garden previously known as Indian Botanic Garden has the largest herbarium in India. It is located in Shibpur, Howrah near Kolkata.
    So the correct answer is option C.
  • Question 3
    1 / -0
    Rauvolfia serpentina belongs to family
    Solution
    • Rauwolfia serpentia is the species of a flower in the Order Gentianales of the milk weed Family Apocynaceae.
    • It is known as the Indian snakeroot or devil pepper. It is native to India subcontinent and East Asia. It is a perennial under shrubs widely distributed in India.
    •  It is a safe and effective treatment for hypertension. Early research shows that Indian snake root can reduce anxiety, blood pressure and helps in  preventing insomnia.
    So the correct option is Apocynaceae. 
  • Question 4
    1 / -0
    Two plants can be conclusively said to belong to the same species if they

    Solution
    Two organisms are said to belong to same species if they can interbreed among themselves to produce fertile offspring. In the case of plants, seeds represent the embryonic structure of the plant which later develops into offspring. 
    So, the correct option is 'Can reproduce freely with each other and form seeds'.
  • Question 5
    1 / -0
    Kew (London) is famous for
    Solution
    Royal Botanic Gardens (Kew, England, UK) Herbarium houses over seven million specimens and plays a central role in research into plant biodiversity on Earth. At Kew, the herbarium has a central role for research on plant biodiversity with seven million specimens including approximately 3,50,000 specimens.
  • Question 6
    1 / -0
    Which biological factor is responsible for poor vegetation in deserts


    Solution
    Deserts have 25 cm (10 inches) or less of precipitation and show poor biodiversity and their productivity is minimum. 

  • Question 7
    1 / -0
    Which of the following is a criterion for classification of living organisms?
    Solution
    Living organisms are classified based on their body designs as asymmetrical, bilaterally or radially symmetrical. They are also broadly classified as autotrophs, heterotrophs, and saprotrophs based on the nutritional modes. They are called as eukaryotes and prokaryotes based on the presence and absence of a membrane-bound nucleus and cell organelles, respectively. So, the correct answer is option D.
  • Question 8
    1 / -0
    Starting from class, species comes after the 
    Solution
    Taxonomy (from Ancient Greek:  taxis, "arrangement," and nomia, "method") is the science of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups. In biological classification, rank is the relative level of an organism or group of organisms in a taxonomic hierarchy.
    According to the taxonomic ranking, the genus comes before species when counted from class.

  • Question 9
    1 / -0
    Which of the following is not true for a species -
    Solution
    Correct Answer: C
    Explanation for correct answer:
    • The transfer of genetic material from one population to another is called gene flow. 
    • It helps in maintaining genetic diversity. 
    • An example of the same is pollen being transferred to another location. 
    Explanation for the wrong answers:
    Option A: Members of a species can interbreed among themselves. 
    Option B: Variation in the same species results in natural selection. 
    Option D: Species can interbreed, but different species are reproductively isolated from one another. 
    Hence, the incorrect statement is gene flow does not occur between the populations of a species.

  • Question 10
    1 / -0
    Lemongrass oil is extracted from
    Solution

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