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Biological Classification Test - 41

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Biological Classification Test - 41
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  • Question 1
    1 / -0
    Which one of the following is correctly matched regarding an institute and its location ?
    Solution
    The National Institute of Virology (NIV) is a premier virus research laboratory in India affiliated to the University of Pune.
    Therefore, the correct answer is option C.
  • Question 2
    1 / -0
    Viruses are living because _______________.
    Solution

    Like other living organisms, viruses don’t have nuclei and organelles, (which are essentials of a living cell) but they are considered as living because they reproduce inside their host body by serious of chemical reactions, and hence multiply there number inside the host body.

     

    The correct answer is A.

  • Question 3
    1 / -0
    Cytokines that provide non specific immunity against virus are _____________.
    Solution
    Interferon is a group of proteins that increases the resistance of cells to viral infection. Interferon also acts as cytokines and are involved in the generation of the immune responses. Three types of interferons have so far been discovered, alpha, beta and gamma, all of which have immune-modulating effects. Interferons are used in the treatment of cancer and autoimmune diseases.
    So, the correct answer is 'Interferon'
  • Question 4
    1 / -0
    Common feature of Euglena, Amoeba, Trypanosoma and Entamoeba is.

  • Question 5
    1 / -0
    A cell placed in hypotonic solution will 
    Solution
    If the medium surrounding the cell has a higher water concentration than the cell,i.e., it is very dilute (hypotonic solution), then the cell will gain water by osmosis and will swell up.
  • Question 6
    1 / -0
    Which of the following serves as indicator of atmospheric pollution? 
    Solution
    Lichens are the symbiotic association between the fungi and algae. They obtain almost all their nutrients from the atmosphere through uptake over their entire surface and thus called as epiphytic lichens. They have no cuticle, nor means of controlling nutrient uptake, unlike vascular plants, and free exchange of both gasses and solutions occurs across cell surfaces. Lichens are therefore highly susceptible to changes in atmospheric composition and for this reason provide very sensitive indicators of such changes. Lichens are sensitive to sulphur, nitrogen, acidity, halogens (e.g., fluoride), heavy metals and ozone.
    Therefore, the correct answer is option C.
  • Question 7
    1 / -0
    Amoeba is a/an:
    Solution
    Amoeba is a member of a whole group of amoeboid eukaryotic protists called Amoebozoa. It is a unicellular organism that is capable of carrying out all the metabolic activities with the help of that single cell. The pseudopodia are extensions of the organism's cell membrane which help in locomotion.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    Some reliable indicators of air pollutants (SO$$_2$$ and noxious gases) are
    Solution
    Lichens and mosses are used as the indicators of air pollution. These structures grow on damp areas. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially SO$$_2$$ can damage these plants, and check them from growing. In places where these vegetation are not growing, it indicates that the air is heavily polluted with sulphur dioxide and other pollutants. 
    Thus, the correct answer is option A. 
  • Question 9
    1 / -0
    Lichens are best indicators of
    Solution
    Lichens are used as the indicators of air pollution. These structures grow on tree bark and rocks. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially SO$$_2$$ (sulphur dioxide) can damage lichens, and check them from growing. In places where lichens are not growing, it indicates that the air is heavily polluted with sulphur dioxide and other pollutants. 
    Thus, the correct answer is option D. 
  • Question 10
    1 / -0
    Amoeba consists of
    Solution
    Amoeba is a protozoan belonging to kingdom Protista. They are unicellular organisms meaning that they consists of a single cell. Hence B is the correct option.
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