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MH SET 2018: 28 January, Paper II, Life Sciences

  • Date: 28 January 2018
  • Paper code: JAN34218
  • Series: A
  • Language: Bilingual
  • 12 pages
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Test Booklet Code & Serial No.
                                                                                                                      A
                                                            LIFE SCIENCE
Signature and Name of Invigilator                                                                 Seat No.
1. (Signature) .........................................                                                   (In figures as in Admit Card)
      (Name) ................................................                    Seat No. ..............................................................
2. (Signature) .........................................                                                   (In words)

      (Name) ................................................                      OMR Sheet No.

JAN - 34218                                                                                          (To be filled by the Candidate)
Time Allowed : 1¼ Hours]                                                                            [Maximum Marks : 100
Number of Pages in this Booklet : 12                                                   Number of Questions in this Booklet : 50
                     Instructions for the Candidates
1.        Write your Seat No. and OMR Sheet No. in the space provided            1.
          on the top of this page.
2.        This paper consists of 50 objective type questions. Each question
          will carry two marks. All questions of Paper-II will be compulsory,    2.
          covering entire syllabus (including all electives, without options).
3.        At the commencement of examination, the question booklet
          will be given to the student. In the first 5 minutes, you are
          requested to open the booklet and compulsorily examine it as           3.
          follows :
          (i)      To have access to the Question Booklet, tear off the
                   paper seal on the edge of this cover page. Do not accept               (i)
                   a booklet without sticker-seal or open booklet.
          (ii)     Tally the number of pages and number of questions
                   in the booklet with the information printed on the                     (ii)
                   cover page. Faulty booklets due to missing pages/
                   questions or questions repeated or not in serial
                   o rder or any other discre pancy should not be
                   accepted and correct booklet should be obtained
                   from the invigilator within the period of 5 minutes.
                   Afterwards, neither the Question Booklet will be
                   replaced nor any extra time will be given. The same
                   may please be noted.
          (iii)    After this verification is over, the OMR Sheet Number
                   should be entered on this Test Booklet.                                (iii)
4.        Each question has four alternative responses marked (A), (B),
          (C) and (D). You have to darken the circle as indicated below on
          the correct response against each item.                                4.                        (A), (B), (C)   (D)
          Example : where (C) is the correct response.

                             A        B                 D
                                                                                                     (C)
5.        Your responses to the items are to be indicated in the OMR
          Sheet given inside the Booklet only. If you mark at any place                                    A         B            D
          other than in the circle in the OMR Sheet, it will not be evaluated.
                                                                                 5.
6.        Read instructions given inside carefully.
7.        Rough Work is to be done at the end of this booklet.
8.        If you write your Name, Seat Number, Phone Number or put               6.
          any mark on any part of the OMR Sheet, except for the space            7.
          allotted for the relevant entries, which may disclose your             8.
          identity, or use abusive language or employ any other unfair
          means, you will render yourself liable to disqualification.
9.        You have to return original OMR Sheet to the invigilator at the
          end of the examination compulsorily and must not carry it with         9.
          you outside the Examination Hall. You are, however, allowed
          to carry the Test Booklet and duplicate copy of OMR Sheet on
          conclusion of examination.
10.       Use only Blue/Black Ball point pen.                                    10.
11.       Use of any calculator or log table, etc., is prohibited.               11.
12.       There is no negative marking for incorrect answers.                    12.
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                                 Life Science
                                     Paper II
Time Allowed : 75 Minutes]                                  [Maximum Marks : 100

Note : This Paper contains Fifty (50) multiple choice questions. Each question
        carries Two (2) marks. Attempt All questions.


1.   Difference      in   chromosomal          2.   Order of stages in cell cycle is :
     determination of sex between
                                                    (A) S, G1, G2, M
     Drosophila and human is because :
                                                    (B) M, G1, G2, S
     (A) In Drosophila, the ratio of X
                                                    (C) G1, S, G2, M
         chromosome       to   autosome
         determines       maleness    or            (D) G2, M, S, G1
         femaleness whereas in human,
                                               3.   A bacterium is found to lack catalase,
         the Y chromosome determines
                                                    peroxidase      and      superoxide
         maleness.
                                                    dismutase. Which of the following
     (B) As seen in human, mere                     statements best describes this
         presence of two X chromosomes              bacterium ?
         triggers female developmental
                                                    (A) This bacterium is highly
         pathway in Drosophila.
                                                        virulent.
     (C) In both human and Drosophila
                                                    (B) This bacterium does not produce
         the Y chromosome determines
                                                        superoxide.
         maleness

     (D) As seen in Drosophila, presence            (C) This bacterium is an obligate

         of single X chromosome in the                  anaerobe.

         absence of Y chromosome can                (D) This bacterium is an obligate
         tigger maleness in human.                      aerobe.
                                           3                                      [P.T.O.
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4.   Characteristics of intracellular            6.   During mitosis, Anaphase promoting

     receptors that regulate gene                     complex (APC) is involved in

     transcription include the following,             regulating :


     except :                                         (A) Separation of sister chromatids

                                                          only
     (A) It has a DNA binding site.

                                                      (B) Separation of sister chromatids
     (B) It has an extracellular ligand
                                                          and exit from mitosis
         binding site.
                                                      (C) Formation of polar microtubules
     (C) It may be signaled by lipid.
                                                      (D) Formation of actin rings during
     (D) It has a transcription activating
                                                          cytokinesis
         domain.
                                                 7.   Wolffian lens regeneration is
5.   Ac-Ds system in corn involves
                                                      Amphibia is an example of :
     dissociation of gene located on :
                                                      (A) Differentiation only
     (A) 9th chromosome
                                                      (B) De-differentiation only

     (B) 5th chromosome
                                                      (C) De-differentiation followed by

     (C) 7th chromosome                                   proliferation

     (D) 13th chromosome                              (D) Trans-differentiation

                                             4
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8.   Which    among      the   following        11. If an aqueous solution has a
     phenomena interfers with the                   hydrogen ion concentration of 10–3 M,
     balance theory of sex determination            what is the concentration of
     in Drosophila ?                                hydroxyl ion ?

     (A) Linkage                                    (A) 10–14 M

     (B) Non-disjunction                            (B) 10–10 M

     (C) Crossing over                              (C) 10–11 M

                                                    (D) 10–12 M
     (D) Environmental
                                                12. Which of the following pair of amino
9.   A Fab fragment :
                                                    acids belong to the class of polar
     (A) is produced by pepsin treatment
                                                    amino acids ?
     (B) is produced by separation of               (A) Serine and aspargine
         heavy and light chains
                                                    (B) Aspargine and alanine
     (C) Binds antigen
                                                    (C) Serine and valine
     (D) Lacks light chains
                                                    (D) Valine and methionine
10. In prokaryotes, the sequence in
                                                13. A    non-protein       amino      acid
     mRNA that is recognized by the
                                                    canavanine, can be mistakenly
     small subunit of ribosome during its           incorporated in the place of............
     translation is known as :                      into proteins.
     (A) UAG sequence                               (A) Arginine

     (B) Shine-Dalgarno sequence                    (B) Cysteine

     (C) Pribnow box sequence                       (C) Methionine

     (D) AUG sequence                               (D) Glycine

                                            5                                       [P.T.O.
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14. Which of the following molecules             17. Budding is the chief mode of
    binds with greater affinity to calcium           reproduction in :
    hydroxy apatite column ?
                                                     (A) Pipewarts
    (A) ATP
                                                     (B) Stonewarts
    (B) RNA
                                                     (C) Bladderwarts
    (C) ss-DNA
                                                     (D) Duckweeds
    (D) ds-DNA

                                                 18. The role of double fertilization in
15. Hydrogen bond can be formed

    between the pair of atoms such as :              angiosperms is to produce :

    (A) Hydrogen and Carbon                          (A) Cotyledons

    (B) Hydrogen and Nitrogen                        (B) Mesocarp

    (C) Oxygen and Nitrogen                          (C) Endosperm

    (D) Oxygen and Carbon
                                                     (D) Endocarp
16. Biosynthetic pathway of which of
                                                 19. Cells can supercool to only about
    the following amino acids is similar
                                                     ................°C.
    to purine biosynthesis ?
                                                     (A) 0
    (A) Proline
                                                     (B) – 40
    (B) Tryptophan

    (C) Histidine                                    (C) – 80

    (D) Leucine                                      (D) – 20
                                             6
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20. Which one of the following is NOT           23. Fluorescent dyes absorb light at one
    a characteristic of Alzheimer’s                 wavelength and emit it at another
    disease ?
                                                    longer wavelength. This can be
    (A) Loss of cholinergic neurons                 examined under :
    (B) Loss of memory
                                                    (A) Fluorescence Microscope
    (C) Sleep is disturbed
                                                    (B) Stereozoom Microscope
    (D) Increase       in   number     of
                                                    (C) Electron Microscope
           cholinergic neurons

21. During fruit ripening, one of main              (D) Dissecting Microscope

    hormones playing an important role          24. Which of the following represents
    is :
                                                    triplet repeat disorder ?
    (A) Ethylene
                                                    (A) Huntington’s disease
    (B) ABA
                                                    (B) Cystic fibrosis
    (C) Auxin
                                                    (C) Xeroderma pigmentosum
    (D) Gibberellin

22. Apoplast transport of water in plants           (D) Phenylketonuria

    take place :                                25. Polycistronic transcription units are
    (A) Through non-living portion of               common in :
           the plant
                                                    (A) Archae
    (B) Through living cells of the plant
                                                    (B) Bacteria
    (C) By both living and non-living
           portion of the plant                     (C) Eukarya

    (D) Through plasmodesmata                       (D) Both Archae and Bacteria

                                            7                                     [P.T.O.
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26. What will be the frequency of AABB         29. The technique of radiocarbon dating

    individuals from mating of two AaBb            has been used to estimate the age

    individuals ?                                  of fossilized life forms. What is the
                                                   approximate half-life of carbon-14 ?
    (A) 1/64
                                                   (A) 550 years
    (B) 1/16
                                                   (B) 5,500 years
    (C) 1/4
                                                   (C) 55,000 years
    (D) 3/16
                                                   (D) 5,50,000 years
27. Which of the following is a bypass
                                               30. Lamarck’s      theory     of    organic
    to DNA damage repair system ?
                                                   evolution is popularly known as :
    (A) Base excision repair
                                                   (A) Inheritance      of        acquired
    (B) SOS                                            characters

    (C) Nucleotide excision repair                 (B) Descent with change

    (D) Homologous repair system                   (C) Continuity of germplasm

28. The phenotypic ratio obtained in F2            (D) Natural selection
    is 2 : 1 in the progeny of cross due       31. The Sewall Wright effect occurs
    to presence of :                               because of :

    (A) Dominant allele                            (A) Mutation

    (B) Recessive allele                           (B) Decline in population

    (C) Lethal allele                              (C) Increase in population

    (D) Co-dominant allele                         (D) Variation
                                           8
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32. Quinine, an anti-malarial drug is           35. Some traits are considered more
    produced by which of the following              important than others in :
    plant ?
                                                    (A) Taxonomy
    (A) Ephedra

    (B) Rauwolfia                                   (B) Cladistics

    (C) Cinchona                                    (C) Phenetics

    (D) Podophyllum                                 (D) Systematics
33. All the seemingly similar ancestors
                                                36. Supplemental nicotinamide or its
    who are on the direct line of
                                                    analogue niacin relieves the dietary
    evolution of man are grouped into
    a single family Hominidae. All of the           deficiency disease known as :
    following belong to Hominidae,
                                                    (A) Pernicious anaemia
    except :
                                                    (B) Marasmus
    (A) Proconsul

    (B) Australopithecus                            (C) Megaloblastic anaemia

    (C) Ramapithecus                                (D) Pellagra

    (D) Therapsids                              37. Best example of a microbial
34. A species inhabiting different                  insecticide is :
    geographical regions is known as :
                                                    (A) B. subtilis
    (A) Sympatric
                                                    (B) B. polymyxa
    (B) Allopatric

    (C) Sibling                                     (C) B. thuringensis

    (D) Biospecies                                  (D) B. lechiniformis
                                            9                                    [P.T.O.
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38. Hotspots are the regions of :               42. Which of the following statements
                                                    is NOT true ?
    (A) Rarity
                                                    (A) Directional selection shifts the
    (B) Endemism
                                                           overall     make    up   of   the
    (C) Endangered species
                                                           population     by    favouring
    (D) Diversity                                          variants of one extreme.
39. Variation maintained in a population
                                                    (B) Stabilizing selection acts
    with Mendelian inheritance is
                                                           against extreme phenotypes.
    explained by :
                                                    (C) In diversifying selection, no
    (A) Natural selection theory
                                                           extreme      phenotypes       are
    (B) Blending inheritance theory
                                                           favoured.
    (C) Hardy-Weinberg principle
                                                    (D) In stabilizing selection, genetic
    (D) Spontaneous generation theory
                                                           polymorphism is maintained.
40. Based on molecular evolution, which
                                                43. The pond ecosystem is characterised
    one of the following is close to
    humans ?                                        by :

    (A) Orangutans                                  (A) Inverted pyramid of biomass

    (B) Gibbons                                     (B) Inverted pyramid of numbers

    (C) African apes                                (C) Upright pyramid of biomass
    (D) Lemur                                       (D) Inverted pyramid of energy
41. A directional process of species            44. Ecological studies of a population
    replacement over a period of time in
                                                    are known as :
    a community is termed as :
                                                    (A) Autecology
    (A) Climate change
                                                    (B) Synecology
    (B) Community change
    (C) Competition                                 (C) Demecology

    (D) Succession                                  (D) Systematics
                                           10
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45. What is the name of the First                48. The system based exclusively upon

    National Park of India established               face of observed characters without

    in 1936 ?                                        direct reference to phylogeny is

                                                     called :
    (A) Kaziranga
                                                     (A) Natural classification
    (B) Ranthambore
                                                     (B) Phylogenetic classification
    (C) Jim Corbett
                                                     (C) Phenetic classification
    (D) Hailey
                                                     (D) Evolutionary classification
46. Cold sterilization refers to the
                                                 49. The scientific names of animals from
    preservation of food by :
                                                     sub-genera and above are :
    (A) Radiation
                                                     (A) Uninomial
    (B) Dehydration
                                                     (B) Binomial
    (C) Lyophilization
                                                     (C) Trinomial
    (D) Refrigeration
                                                     (D) Polynomial
47. Which of the following is not ex-situ
                                                 50. The system of ‘‘binomial name’’ was
    conservation strategies ?                        devised by :

    (A) Botanical gardens                            (A) Augustin DeCandolle

    (B) National Park                                (B) Alphonse DeCandolle

    (C) Zoos                                         (C) Caspar Baubin

    (D) Seed Bank                                    (D) Carl Linnaeus
                                            11                                     [P.T.O.
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ROUGH WORK




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Source: Savitribai Phule Pune University. Question paper published by Savitribai Phule Pune University.