Saturday 31 May 2014

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 13

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 13

301.    The most common method of vegetative reproduction is Usnea is
            A)        fragmentation                       B)        soredia
C)        gemmae                               D)        hormogonia








Answer: (D)








302.    Which of the fungi mentioned below is employed as a genetic tool?
            A)        Aspergillus                            B)        Neurospora
C)        Gibberella                              D)        Penicillium








Answer: (B)








303.    Heterotrichous habit is exhibited by
            A)        Vaucheria                           B)        Dictyota
C)        Ectocarpus                        D)        Spirogyra








Answer: (C)








304.    Photosynthesis cannot take place in
            A)        Red light                                B)        Blue light
C)        Ultraviolet light                       D)        Green light








Answer: (C)








305.    Consider the following statements:
            I.          In Pinus only simple cleavage polymbryony is seen
            II.         In Pinus  both simple polyembryony and cleavage
polyembryony are present
            III.        In Pinus polymbryony is not seen
            IV.       In Pinus embryogenesis is not clear

            Of the statements:
            A)        IV alone is correct
B)        III alone is correct
C)        I alone is correct
D)        II alone is correct








Answer: (A)








306.    What is the cause for deforestation?
            A)        Destruction
            B)        Rapid explosion of human and livestock population
C)        Loss of green wealth
D)        None of these








Answer: (B)








307.    How soil get eroded?
            A)        By collection of wastes      
            B)        By disposal of wastes
C)        By floods and rains
D)        By mechanical methods








Answer: (C)








308.    The shape of Human Immuno Deficiency Virus (HIV) is
            A)        Spherical in shape                         
B)        Rod like in shape
C)        Spiral like in shape                 
D)        Comma like in shape








Answer: (A)



309.    Match List I with List II correctly and select your answer using the
codes given below:
            List I                                       List II
            a)         Virus                                       1.  Robert Hooke
b)         Bacteria                                 2.  Robert Brown
            c)         Nucleus                                 3.  Dimitry Ivanowsky
d)         Cell                                        4.  Anton van Leeuwenhoek

Codes:
                        a          b          c          d
            A)        3          4          2          1
            B)        4          2          1          3
            C)        1          2          3          4
            D)        2          3          4          1








Answer: (A)







310.    Polyploidy is most common in
            A)        Animal Kingdom
            B)        Plant Kingdom
C)        Fungi
D)        Protista








Answer: (D)








311.    The Blue-green algae are
            A)        Photoheterotrophs
            B)        Photoautotrophs
C)        Chemoautotrophs
D)        Chemoheterotrophs








Answer: (B)








312.    Which of the following acts as a coenzyme?
            A)        Zn++                                       B)        Lipase
C)        Pyridoxin                              D)        Lysine








Answer: (C)








313.    The phenotypic ratio of monohybrid cross is
            A)        1  :  1  :  1  :  1           B)        1  :  2  :  1
C)        3  :  1                         D)        1  :  1








Answer: (A)








314.    Smallest measuring unit in cytology is
            A)        micron                                    B)        mm
C)        angstrom                               D)        rem








Answer: (C)







315.    It is believed that live evolved in its early stage under oxygen-free
            condition. Which of the following organisms might have been able
            to survive in that environment?
            A)        Obligate anaerobic bacteria
            B)        Obligate halophytes
C)        Lichens
D)        Thermophilic algae








Answer: (A)








316.    A scientist kept 72 generations of Drosophila in darkness. Even
            after 72 generations, files had normal eyes. This disapproves the
            theory of
            A)        natural selection                             
B)        sexual selection
C)        use and disuse                          
D)        artificial selection








Answer: (C)








317.    The lower region above the earth’s surface is called
            A)        Stratosphere                     B)        Ozone layer
C)        Troposphere                      D)        Atmosphere







Answer: (C)







318.    In Bonellia a marine worm, the male develops from a larva which
            A)        settles in the canal of sponges
B)        attaches to the uterus of female
C)        settles in the long proboscis of female
D)        secretes a chemical substance







Answer: (C)







319.    Spermatids derive the nourishment from
            A)        nucleus
B)        cytoplasm
C)        ciliated epithelial cell
D)        radioactive pollution








Answer: (C)








320.    Acid rain results from
            A)        thermal pollution
B)        land pollution
C)        air pollution
D)        radioactive pollution








Answer: (C)








321.    One of the characteristics that differentiates prokaryotes from
eucaryotes is
            A)        RNA
B)        DNA
C)        Protein
D)        radioactive pollution








Answer: (C)






322.    Match List I (Pathogens) with List II (Diseases) correctly and select
your answer using the codes given below:
            List I                                                   List II
       (Pathogens)                                          (Diseases)
            a)         Entamoeba histolytica             1.  Whooping cough
b)         Clostridium tetani                      2.  Amoebiasis
            c)         Bordetella pertussis                   3.  Filariasis
d)         Wuchereria bancrofti                 4.  Tetanus
Codes:
                        a          b          c          d
            A)        2          4          1          3
            B)        2          4          3          1
            C)        4          2          1          3
            D)        2          1          3          4








Answer: (A)








323.    Which of the following is correctly matched?
            A)        Helps in breathing               -  Stomach
B)        Stores R.B.C.                        -  Spleen
C)        Stores glycogen                   -  Diaphragm
D)        Protein digestion
occurs here                           -  Liver








Answer: (B)








324.    Oxytocin is secreted by
            A)        adrenal gland                       B)        pituitary
C)        ovary                                      D)        testis









Answer: (B)







325.    Which of the following is correctly matched?
            A)        Coeloblastula     -  Bilateral symmetry
B)        Disco blastula     -  Pig embryo
C)        Placenta             -  Extra embryonic membrane
D)        Epibodly         -  Movement of cells during embryo formation









Answer: (D)

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