CBSE Assistant Secretary 2024: Assistant Secretary, CBSE Recruitment Examination, Tier 2 (RAS-1124), Academics and Training, Biology

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No. of Printed Pages : 8


RAS-1124                                                                •ŸÈ∑˝§◊Ê¥∑§
                                                                           Roll No.

                                                           ATS
                                              BIOLOGY / ¡Ëfl ÁflôÊÊŸ
                                          Question Paper / ¬˝‡Ÿ-¬òÊ
Time allowed : Three Hours                                                                                Maximum Marks : 320
‚◊ÿ — ÃËŸ ÉÊ¥≈U                                                                                          •Áœ∑§Ã◊ •¥∑§ — 320

Question Paper may be detached which can be taken away by the candidate after examination.
¬˝‡Ÿ-¬òÊ •‹ª (ÁflÿÊíÿ) Á∑§ÿÊ ¡Ê ‚∑§ÃÊ „Ò •ÊÒ⁄U ¬⁄UˡÊÊÕ˸ ¬⁄UˡÊÊ ∑§ ©¬⁄Uʥà •¬Ÿ ‚ÊÕ ‹ ¡Ê ‚∑§Ã „Ò¥–

                                                   Part ‘A’ / π¥«U “•”
Part ‘A’ has 15 questions. All questions are compulsory. Each question carries 2 marks.
π¥«U “•” ◊¥ 15 ¬˝‡Ÿ „Ò¥, ÿ ‚÷Ë ¬˝‡Ÿ •ÁŸflÊÿ¸ „Ò¥– ¬˝àÿ∑§ ¬˝‡Ÿ 2 •¥∑§ ∑§Ê „Ò–
1.    Write one difference between myeloid and lymphoid stem cells.
      ◊Êÿ‹Êß«U ◊Í‹ ∑§ÊÁ‡Ê∑§Ê•Ê¥ •ÊÒ⁄U Á‹ê»§Êÿ«U ◊Í‹ ∑§ÊÁ‡Ê∑§Ê•Ê¥ ◊¥ ∞∑§ •¥Ã⁄U Á‹Áπ∞–

2.    Fill in the Blank :
      __________ score of 2 or more means that the two genes are linked and therefore inherited
      together.
      Á⁄UÄà SÕÊŸ ÷Á⁄U∞ —
      __________ ◊ÊŸ ∑§Ê 2 ÿÊ ©‚‚ •Áœ∑§ „ÊŸ ∑§Ê •Õ¸ „Ò Á∑§ ŒÊ ¡ËŸ¥ ’h „Ò¥ •Ã— ß∑§≈˜∆UË fl¥‡Êʪà „ÊÃË „Ò¥–


3.    Which of the base pair change represents for transition and which one for transversion ?
      ’‚ ÿÈÇ◊ ◊¥ ∑§ÊÒŸ ‚Ê ¬Á⁄UfløŸ SÕÊŸÊ¥Ã⁄UáÊ •ÊÒ⁄U ∑§ÊÒŸ ‚Ê ¬˝ÁÃSÕʬŸ ∑§ Á‹∞ ¬˝ÁÃÁŸÁœàfl ∑§⁄UÃÊ „Ò?
      (i)    AT → TA
      (ii)   AT → GC

4.    Give one word for the following :
      The process whereby an activated B cell changes its antibody production from IgM to either
      IgA, IgG or IgE.
      ÁŸêŸÁ‹Áπà ∑§ Á‹∞ ∞∑§ ‡ÊéŒ Á‹Áπ∞ —
      fl„ ¬˝Á∑˝§ÿÊ Á¡‚◊¥ ∞∑§ ‚Á∑˝§Áÿà B ∑§ÊÁ‡Ê∑§Ê ©‚∑§Ê ¬˝ÁÃ⁄UˇÊË ©à¬ÊŒŸ IgM ‚ IgA, IgG •ÕflÊ IgE ◊¥ ’Œ‹ ‹ÃË
      „Ò–

RAS-1124 / ATS                                                1                                                   Biology

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5.    Why is Phosphorus cycle considered as an example of imperfect cycle ? Give one reason.
      $»§ÊÚS»§Ê⁄U‚ ø∑˝§ ∑§Ê òÊÈÁ≈U¬Íáʸ ø∑˝§ ∑§Ê ∞∑§ ©ŒÊ„⁄UáÊ ÄÿÊ¥ ◊ÊŸÊ ¡ÊÃÊ „Ò? ∞∑§ ∑§Ê⁄UáÊ Á‹Áπ∞–

6.    Choose one word from the parenthesis given in the following statement :
      The acrosome reaction in mammalian sperm is initiated by an influx of (calcium ions /
      glycoproteins)
      ŸËø ÁŒ∞ ª∞ ∑§ÕŸ ∑§ Á‹∞ ∑§Êc∆U∑§ ◊¥ ÁŒ∞ ª∞ ‡ÊéŒÊ¥ ◊¥ ‚ ∞∑§ ∑§Ê øÿŸ ∑§ËÁ¡∞ —
      SßËÿ ‡ÊÈ∑˝§ÊáÊÈ ◊¥ •ª˝Á¬¥«U∑§ •Á÷Á∑˝§ÿÊ ∑§Ê ‚÷Ê⁄¥U÷Ÿ (∑Ò§ÁÀ‡Êÿ◊ •ÊÿŸ / Ç‹Êß∑§Ê¬˝Ê≈UËŸ) ∑§ •ãÃflʸ„ ‚ „ÊÃÊ „Ò–

7.    Give one word for the following statement :
      Ideal markers for DNA Fingerprinting.
      ŸËø ÁŒ∞ ª∞ ∑§ÕŸ ∑§ Á‹∞ ∞∑§ ‡ÊéŒ ŒËÁ¡∞ —
      «UË ∞Ÿ ∞ •¥ªÈÁ‹¿UʬŸ ∑§ Á‹∞ •ÊŒ‡Ê¸ Áøq∑§–

8.    Which two types of probes are used in qPCR ?
      qPCR ◊¥ Á∑§Ÿ ŒÊ ¬˝∑§Ê⁄U ∑§ ¬Á⁄UÁˇÊòÊÊ¥ ∑§Ê ©¬ÿÊª Á∑§ÿÊ ¡ÊÃÊ „Ò?


9.    Why is the technique of Western blotting also called immuno blotting ?
      ¬Á‡ø◊Ë ‡ÊÊ·Ë Ã∑§ŸË∑§ ∑§Ê ¬˝ÁÃ⁄UˇÊÊ ‡ÊÊ·Ë ÷Ë ÄÿÊ¥ ∑§„Ã „Ò¥?

10.   Name one important hormone involved in each of the following homeostatic behaviours :
      ÁŸêŸÁ‹Áπà ‚◊SÕÒÁÃ∑§ √ÿfl„Ê⁄UÊ¥ ◊¥ ‚Áê◊Á‹Ã ∞∑§-∞∑§ ◊„ûfl¬Íáʸ „ÊÚ◊Ê¸Ÿ ∑§Ê ŸÊ◊ Á‹Áπ∞ —
      (i)     Feeding                         (ii)    Sleeping
              •‡ÊŸ                                    ÁŸŒ˝Ê

11.   Where is nitrate reductase located in the cyanobacteria ?
      ‚ÊÿŸÊ’ÒÄ≈UËÁ⁄UÿÊ ◊¥ ŸÊß≈˛U≈U Á⁄U«UÄ≈U‚ ∑§„Ê° •flÁSÕà „ÊÃÊ „Ò?

12.   Differentiate between paraheliotropic and diaheliotropic leaves.
      ¬⁄UÊ‚ÍÿʸŸÈflûÊ˸ •ÊÒ⁄U Ám‚ÍÿʸŸÈflûÊ˸ ¬ÁûÊÿÊ¥ ◊¥ •¥Ã⁄U Á‹Áπ∞–

13.   Which forms of D-glucose get interconverted in aqueous solution by mutarotation ?
      «UË-Ç‹Í∑§Ê‚ ∑§ ∑§ÊÒŸ ‚ M§¬ ¡‹Ëÿ Áfl‹ÿŸ ◊¥ œ˝ÈfláÊ ÉÊÍáʸŸ mÊ⁄UÊ ¬Á⁄UflÃ˸ „Ê ¡ÊÃ „Ò¥?

RAS-1124 / ATS                                                          2                                          Biology

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14.   Write one difference between transpiration and guttation.
      flÊc¬Êà‚¡¸Ÿ •ÊÒ⁄U Á’¥ŒÈdÊfl ◊¥ ∞∑§ •¥Ã⁄U Á‹Áπ∞–

15.   Write one important application of phase contrast microscopy.
      ∑§‹Ê Áfl¬ÿʸ‚ ‚͡◊ŒÁ‡Ê¸∑§Ë ∑§Ê ∞∑§ ◊„ûfl¬Íáʸ •ŸÈ¬˝ÿÊª Á‹Áπ∞–


                                                           Part ‘B’ / π¥«U “’”
Part ‘B’ has 25 questions. Out of which any 20 questions are to be answered. Each question carries
5 marks. The question may be answered in maximum 30 words.
π¥«U “’” ◊¥ 25 ¬˝‡Ÿ „Ò¥, Á¡Ÿ◊¥ ‚ Á∑§ã„Ë¥ 20 ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U ŒŸ „Ò¥– ¬˝àÿ∑§ ¬˝‡Ÿ 5 •¥∑§ ∑§Ê „Ò– ¬˝‡Ÿ ∑§Ê ©ûÊ⁄U •Áœ∑§Ã◊
30 ‡ÊéŒÊ¥ ◊¥ ÁŒÿÊ ¡Ê ‚∑§ÃÊ „Ò–
16.   Suppose air at 308C and 735.18 mm Hg is saturated with water vapour at 18.00 mm Hg,
      what would be the partial pressure of oxygen in the saturated air ?
      ◊ÊŸ ‹ËÁ¡∞ Á∑§ 308C •ÊÒ⁄U 735.18 mm Hg ¬⁄U flÊÿÈ 18.00 mm Hg ¡‹ flÊc¬ ‚ ‚¥ÃÎåà „Ò– ß‚ ‚¥ÃÎåà flÊÿÈ ◊¥
      •ÊÚÄ‚Ë¡Ÿ ∑§Ê •Ê¥Á‡Ê∑§ ŒÊ’ ÄÿÊ „ÊªÊ?

17.   Draw a flow chart to show how kidney function is hormonally regulated.
      flÎÄ∑§ ∑§ ∑§ÊÿÊZ ∑§Ê „ÊÚ◊Ê¸ŸËÿ ÁŸÿ◊Ÿ Œ‡ÊʸÃ „È∞ ∞∑§ ¬˝flÊ„ øÊ≈¸U ’ŸÊß∞–§

18.   Explain how the rate of an enzyme catalysed reaction reaches a maximum value at high
      substrate concentration in a Michaelis Menten equation ?
      ◊Êß∑§Á‹‚ ◊ã≈UŸ ‚◊Ë∑§⁄UáÊ ◊¥ ©ëø Á∑˝§ÿÊœÊ⁄U ‚Ê¥Œ˝ÃÊ ¬⁄U ∞∑§ ∞ã$¡Êß◊ ©à¬˝Á⁄Uà •Á÷Á∑˝§ÿÊ ∑§Ë Œ⁄U •Áœ∑§Ã◊ ◊ÊŸ
      Ã∑§ ∑Ò§‚ ¬„È°øÃË „Ò?

19.   Explain DNA Vaccine.
      «UË ∞Ÿ ∞ flÒÄ‚ËŸ (≈UË∑§Ê) ∑§Ê fláʸŸ ∑§ËÁ¡∞–

20.   What is a limiting factor ? Which is the limiting factor in most terrestrial ecosystems and
      why ?
      ‚Ë◊Ê∑§Ê⁄UË ∑§Ê⁄U∑§ ÄÿÊ „ÊÃÊ „Ò? •Áœ∑§Ã⁄U SÕ‹Ëÿ ¬ÊÁ⁄UÃ¥òÊÊ¥ ◊¥ ‚Ë◊Ê∑§Ê⁄UË ∑§Ê⁄U∑§ ∑§ÊÒŸ ‚Ê „Ò •ÊÒ⁄U ÄÿÊ¥?

21.   How does predation of animals on seeds and fruit differ from predation of animals on leaves
      and stems of plants ?
      ¬˝ÊÁáÊÿÊ¥ ∑§ mÊ⁄UÊ ¬ÊÒœÊ¥ ∑§ ’Ë¡Ê¥ •ÊÒ⁄U »§‹Ê¥ ∑§Ê ÷ˇÊáÊ ¬ÁûÊÿÊ¥ •ÊÒ⁄U ßÊ¥ ∑§ ÷ˇÊáÊ ‚ ∑Ò§‚ Á÷㟠„Ò¥?

RAS-1124 / ATS                                                          3                                                Biology

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22.   Explain the various repeat elements found in the genome. How these can be applied in the
      technique of DNA profiling/DNA fingerprinting ?

      ¡ËŸÊ◊ ◊¥ ¬Ê∞ ¡ÊŸ flÊ‹ ÁflÁ÷㟠¬ÈŸ⁄UÊflÎûÊ •flÿflÊ¥/ÃûflÊ¥ ∑§Ê fláʸŸ ∑§ËÁ¡∞– «UË ∞Ÿ ∞ ¬˝Ê»§ÊßÁ‹¥ª/«UË ∞Ÿ ∞
      •¥ªÈÁ‹-¿UʬŸ ◊¥ ÿ Á∑§‚ ¬˝∑§Ê⁄U ¬˝ÿÈÄà „Ê ‚∑§Ã „Ò¥?


23.   Write a brief note on genome analysis of Plasmodium falciparum.

      å‹Ò$í◊ÊÁ«Uÿ◊ »§À‚ˬ⁄U◊ ∑§ ¡ËŸÊ◊ Áfl‡‹·áÊ ¬⁄U ∞∑§ ‚¥ÁˇÊåà ŸÊ≈U Á‹Áπ∞–


24.   Give a brief account on the international HAPMAP Consortium.

      •¥Ã⁄Uʸc≈˛UËÿ „Ò¬◊Ò¬ ‚¥∑§Êÿ ∑§Ê ‚¥ÁˇÊåà Áflfl⁄UáÊ ŒËÁ¡∞–


25.   How does the p53 tumour suppressor gene regulate the cell cycle ?

      p53 •’ȸŒ ÁŸ⁄Êœ∑§ ¡ËŸ Á∑§‚ ¬˝∑§Ê⁄U ∑§ÊÁ‡Ê∑§Ê ø∑˝§ ∑§Ê ÁŸÿ◊Ÿ ∑§⁄UÃË „Ò?


26.   Write a short note on evolutionary significance of Fixed Action Patterns (FAPs) in animals.

      ¡ãÃÈ•Ê¥ ◊¥ ÁŸÿà Á∑˝§ÿÊ ¬˝ÁÃM§¬ ∑§ Áfl∑§Ê‚Ëÿ ◊„ûfl ¬⁄U ∞∑§ ‚¥ÁˇÊåà ŸÊ≈U Á‹Áπ∞–


27.   Explain the inter-relationship of altruism and inclusive fitness.

      ¬⁄UÊÕ¸ÃÊ •ÊÒ⁄U •¥ÃÁfl¸c≈ ©¬ÿÈÄÃÃÊ ∑§ ¬⁄US¬⁄U ‚¥’¥œ ∑§Ê fláʸŸ ∑§ËÁ¡∞–U


28.   Write a brief note on RNA world hypothesis of evolution.

      Áfl∑§Ê‚ ∑§Ë •Ê⁄U ∞Ÿ ∞ ‚¥‚Ê⁄U ¬Á⁄U∑§À¬ŸÊ ¬⁄U ∞∑§ ‚¥ÁˇÊåà ŸÊ≈U Á‹Áπ∞–


29.   In a population that is in genetic equilibrium for a single locus trait with two alleles, the
      frequency of one homozygous genotype is 0.09. What is the frequency of heterozygotes ?

      ∞∑§ ‚◊Ác≈ ◊¥, ¡Ê ŒÊ ∞‹Ë‹ flÊ‹ ∞∑§‹ •flÁSÕÁà Áfl‹ˇÊáÊ ∑§ Á‹∞ •ÊŸÈfl¥Á‡Ê∑§ ‚¥ÃÈ‹Ÿ ◊¥ „Ò, ‚◊ÿÈÇ◊Ë ¡ËŸÊ≈UÊ߬
      ∑§Ë •ÊflÎÁûÊ 0.09 „Ò– Áfl·◊ÿÈÇ◊¡Ë ∑§Ë •ÊflÎÁûÊ ÄÿÊ „Ò?U


30.   Give the differences between Photosystem I and Photosystem II with the help of a schematic
      diagram.

      ¬˝∑§Ê‡Ê Ã¥òÊ I •ÊÒ⁄U ¬˝∑§Ê‡Ê Ã¥òÊ II ◊¥ ∞∑§ √ÿflSÕÊ ÁøòÊ ∑§Ë ‚„ÊÿÃÊ ‚ •¥Ã⁄U Œ‡Êʸß∞–

RAS-1124 / ATS                                                  4                                           Biology

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31.   Define the term genetic drift. How does genetic drift affect gene frequencies in a
      population ?

      •ÊŸÈfl¥Á‡Ê∑§ Áflø‹Ÿ ∑§Ê ¬Á⁄U÷ÊÁ·Ã ∑§ËÁ¡∞– ÿ„ ‚◊Ác≈ ∑§Ë ¡ËŸ •ÊflÎÁûÊÿÊ¥ ∑§Ê Á∑§‚ ¬˝∑§Ê⁄U ¬˝÷ÊÁflà ∑§⁄UÃÊ „Ò?U


32.   Discuss the semi-conservative replication process of DNA in Eukaryotes.

      ÿÍ∑§Á⁄UÿÊÚ≈UÊ¥ ◊¥ «UË ∞Ÿ ∞ ∑§Ë •œ¸ ‚¥⁄UˇÊË ¬˝ÁÃ∑ΧÁà ¬˝Á∑˝§ÿÊ ∑§Ë øøʸ ∑§ËÁ¡∞–


33.   What is the role played by brain and muscle in glucose metabolism ?

      Ç‹Í∑§Ê‚ ©¬Ê¬øÿ ◊¥ ◊ÁSÃc∑§ •ÊÒ⁄U ◊Ê°‚¬‡ÊË ∑§Ë ÄÿÊ ÷ÍÁ◊∑§Ê „Ò?


34.   Describe the genetic innovations which led to the origin of eukaryotes.

      ©Ÿ •ÊŸÈfl¥Á‡Ê∑§ ŸflÊã◊·Ê¥ ∑§Ê Áflfl⁄áÊ ŒËÁ¡∞ Á¡Ÿ∑§ ∑§Ê⁄UáÊ ÿÍ∑§Á⁄UÿÊÚ≈UÊ¥ ∑§Ê ©Œ˜÷fl „È•Ê–


35.   Describe the process of regeneration in vertebrates.

      ∑§‡ÊM§∑§Ê¥ ◊¥ ¬ÈŸ¡¸ŸŸ ∑§Ë ¬˝Á∑˝§ÿÊ ∑§Ë ÁflÁœ ∑§Ê Áflfl⁄UáÊ ŒËÁ¡∞–


36.   Explain migration in Fishes.

      ◊¿UÁ‹ÿÊ¥ ◊¥ ¬˝flÊ‚ ∑§Ê fláʸŸ ∑§ËÁ¡∞–


37.   What are isolating mechanisms ? Explain their significance in speciation.

      ¬ÎÕÄ∑§⁄UáÊ Á∑˝§ÿÊÁflÁœÿÊ° ÄÿÊ „ÊÃË „Ò¥? ߟ∑§Ê ¬˝¡ÊÁà ©Œ˜÷flŸ ◊¥ ÄÿÊ ◊„ûfl „Ò?§


38.   Differentiate between echolocation in bats and dolphins.

      ø◊ªÊŒ«∏Ê¥ •ÊÒ⁄U «UÊÚÁÀ»§ŸÊ¥ ∑§ ¬˝ÁÃäflÁŸ ÁŸœÊ¸⁄UáÊ ◊¥ •¥Ã⁄U Á‹Áπ∞–


39.   What is a microbial biosensor ? Explain its basic principles.

      ∞∑§ ‚͡◊¡ÒÁflÿ ¡Òfl‚¥flŒ∑§ ÄÿÊ „ÊÃÊ „Ò? ß‚∑§ •ÊœÊ⁄U÷Íà Á‚hÊ¥ÃÊ¥ ∑§Ê fláʸŸ ∑§ËÁ¡∞–


40.   Explain different types of ion channels in a neuron.

      ãÿÍ⁄UÊÚŸ ◊¥ ÁflÁ÷㟠¬˝∑§Ê⁄U ∑§ •ÊÚÿŸ flÊÁ„∑§Ê•Ê¥ ∑§Ê fláʸŸ ∑§ËÁ¡∞–

RAS-1124 / ATS                                                     5                                          Biology

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                                                          Part ‘C’ / π¥«U “‚”
Part ‘C’ has 12 questions. Out of which any 10 questions are to be answered. Each question carries
10 marks. The question may be answered in maximum 100 words.
π¥«U “‚” ◊¥ 12 ¬˝‡Ÿ „Ò¥, Á¡Ÿ◊¥ ‚ Á∑§ã„Ë¥ 10 ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U ŒŸ „Ò¥– ¬˝àÿ∑§ ¬˝‡Ÿ 10 •¥∑§ ∑§Ê „Ò– ¬˝‡Ÿ ∑§Ê ©ûÊ⁄U •Áœ∑§Ã◊
100 ‡ÊéŒÊ¥ ◊¥ ÁŒÿÊ ¡Ê ‚∑§ÃÊ „Ò–

41.    What are the types of B cell activation ? On what criteria they are differentiated ?
       B ∑§ÊÁ‡Ê∑§Ê ‚Á∑˝§ÿáÊ ∑§ ÄÿÊ ¬˝∑§Ê⁄U „Ò¥? Á∑§Ÿ ¬„‹È•Ê¥ ¬⁄U fl Áfl÷ÁŒÃ Á∑§∞ ¡Ê ‚∑§Ã „Ò¥?


42.    Describe the various stages of Ecological Succession.
       ¬ÊÁ⁄UÁSÕÁÃÁ∑§ÿ •ŸÈ∑˝§◊áÊ ∑§ ÁflÁ÷㟠ø⁄UáÊÊ¥ ∑§Ê Áflfl⁄UáÊ ŒËÁ¡∞–

43.    Explain the genetic uniqueness of Humans and Hominins.
       ◊ÊŸflÊ¥ •ÊÒ⁄U „Ê◊ËÁŸŸÊ¥ ∑§Ë •ÊŸÈfl¥Á‡Ê∑§ •ÁmÃËÿÃÊ ∑§Ê fláʸŸ ∑§ËÁ¡∞–

44.    Explain the important roles played by horizontal gene transfer in the following processes.
       ÁŸêŸÁ‹Áπà ¬˝Á∑˝§ÿÊ•Ê¥ ◊¥ ˇÊÒÁá ¡ËŸ •¥Ã⁄UáÊ mÊ⁄UÊ ÄÿÊ ◊„ûfl¬Íáʸ ÷ÍÁ◊∑§Ê∞° ÁŸ÷Ê߸ ¡ÊÃË „Ò¥?
       (i)    Pathogenesis
              ⁄UÊª¡ŸŸ
       (ii)   Evolution
              Áfl∑§Ê‚

45.    Explain the cell junctions, their types and functions.
       ∑§ÊÁ‡Ê∑§Ê ‚¥ÁœÿÊ°, ©Ÿ∑§ ¬˝∑§Ê⁄Ê¥U •ÊÒ⁄U ©Ÿ∑§ ∑§ÊÿÊZ ∑§Ê fláʸŸ ∑§ËÁ¡∞–

46.    Describe the general principles of signal transduction, applicable to different signalling
       pathways.
       ‚¥∑§Ã ¬Ê⁄U∑˝§◊áÊ ∑§ ‚Ê◊Êãÿ Á‚hÊ¥ÃÊ¥ ∑§Ê Áflfl⁄UáÊ ŒËÁ¡∞ ¡Ê ÁflÁ÷㟠‚¥∑§Ã∑§ ¬ÕÊ¥ ∑§ Á‹∞ •ŸÈ¬˝ÿÊªË „Ò¥–

47.    Compare and contrast Group and Kin selection.
       ‚Ê◊ÍÁ„∑§ ÃÕÊ ’¥œÈÃÊ fl⁄UáÊ ∑§Ë ¬⁄US¬⁄U ÃÈ‹ŸÊ ∑§ËÁ¡∞–

48.    Explain the role of chromatin in gene expression and gene silencing.
       ¡ËŸ •Á÷√ÿÁÄà •ÊÒ⁄U ¡ËŸ ŸË⁄UflÃÊ ◊¥ ∑˝§Ê◊ÒÁ≈UŸ ∑§Ë ÷ÍÁ◊∑§Ê ∑§Ê fláʸŸ ∑§ËÁ¡∞–

RAS-1124 / ATS                                                        6                                             Biology

M     A    S     T    E    R         C     O    P    Y

49.   Explain different methods used to study phylogenetics.

      ¡ÊÁÃflÎàà ∑§ •äÿÿŸ ∑§ Á‹∞ ¬˝ÿÈÄà ÁflÁ÷㟠ÁflÁœÿÊ¥ ∑§Ê fláʸŸ ∑§ËÁ¡∞–


50.   Describe the role played by transposable elements in bacterial evolution giving suitable
      examples.

      ¡ËflÊÁáflÿ Áfl∑§Ê‚ ◊¥ ¬Á⁄UfløŸ‡ÊË‹ ÃûflÊ¥ ∑§Ë ÷ÍÁ◊∑§Ê ∑§Ê ©¬ÿÈÄà ©ŒÊ„⁄UáÊÊ¥ ∑§Ë ‚„ÊÿÃÊ ‚ Áflfl⁄UáÊ ŒËÁ¡∞–


51.   Describe the various accessory respiratory organs in fishes.

      ◊¿UÁ‹ÿÊ¥ ◊¥ ÁflÁ÷㟠‚„Êÿ∑§ ‡fl‚Ÿ •¥ªÊ¥ ∑§Ê Áflfl⁄UáÊ ŒËÁ¡∞–


52.   Explain different techniques of phytoremediation mechanism.

      ¬ÊŒ¬Ê¬øÊ⁄U Á∑˝§ÿÊÁflÁœ ∑§Ë ÁflÁ÷㟠Ã∑§ŸË∑§Ê¥ ∑§Ê fláʸŸ ∑§ËÁ¡∞–


                                                      Part ‘D’ / π¥«U “Œ”
Part ‘D’ has 5 questions. Out of which any 3 questions are to be answered. Each question carries
30 marks. The question may be answered in maximum 300 words.

π¥«U “Œ” ◊¥ 5 ¬˝‡Ÿ „Ò¥, Á¡Ÿ◊¥ ‚ Á∑§ã„Ë¥ 3 ¬˝‡ŸÊ¥ ∑§ ©ûÊ⁄U ŒŸ „Ò¥– ¬˝àÿ∑§ ¬˝‡Ÿ 30 •¥∑§ ∑§Ê „Ò– ¬˝‡Ÿ ∑§Ê ©ûÊ⁄U •Áœ∑§Ã◊
300 ‡ÊéŒÊ¥ ◊¥ ÁŒÿÊ ¡Ê ‚∑§ÃÊ „Ò–

53.   Explain the current status and future of biodiversity with special reference to ongoing climate
      change.

      ¡‹flÊÿÈ ¬Á⁄UfløŸ ∑§ Áfl‡Ê· ‚¥Œ÷¸ ◊¥ ¡Òfl ÁflÁflœÃÊ ∑§Ë flø◊ÊŸ ÁSÕÁà •ÊÒ⁄U ©‚∑§ ÷Áflcÿ ∑§Ê fláʸŸ ∑§ËÁ¡∞–


54.   (a)    What is the significance of ET (Economic Threshold) and EIL (Economic Injury Level)                             6
             in management of agricultural pests ?

             ET (•ÊÁÕ¸∑§ •fl‚Ë◊Ÿ) •ÊÒ⁄U EIL (•ÊÁÕ¸∑§ ˇÊÁà SÃ⁄U) ∑§Ê ∑ΧÁ· ŸÊ‡ÊË¡ËflÊ¥ ∑§ ¬˝’¥œŸ ◊¥ ÄÿÊ ◊„ûfl „Ò?

      (b)    Write names of any two stored grain pests and any two household pests.                                          4

             Á∑§ã„Ë¥ ŒÊ ÷¥«UÊÁ⁄Uà •ŸÊ¡ ŸÊ‡ÊË¡ËflÊ¥ •ÊÒ⁄U Á∑§ã„Ë¥ ŒÊ ÉÊ⁄U‹Í ŸÊ‡ÊË¡ËflÊ¥ ∑§ ŸÊ◊ Á‹Áπ∞–
      (c)    Describe the life cycle, damage caused and control measures for any two of pests given                          20
             in (b) above.

             ©¬⁄UÊÄà (b) ◊¥ ‚ Á∑§ã„Ë¥ ŒÊ ŸÊ‡ÊË¡ËflÊ¥ ∑§ ¡ËflŸ ø∑˝§, „ÊŸflÊ‹Ë ˇÊÁà •ÊÒ⁄U ÁŸÿ¥òÊáÊ ÁflÁœÿÊ¥ ∑§Ê Áflfl⁄UáÊ
             ŒËÁ¡∞–

RAS-1124 / ATS                                                    7                                                Biology

M      A     S    T     E     R         C     O     P     Y

55.   (a)     What is radiolabelling ? What are the procedures to prepare labelled compounds ?                                                 5

              ⁄UÁ«UÿÊ‹’‹Ÿ ÄÿÊ „ÊÃÊ „Ò? ÁøÁqà ÿÊÒÁª∑§Ê¥ ∑§Ê ’ŸÊŸ ∑§ Á‹∞ ∑§ÊÒŸ ‚Ë Á∑˝§ÿÊÁflÁœÿÊ° „¥Ò?
      (b)     Describe Tracer Technique and Isotope Dilution Method.                                                                          15

              ≈˛U‚⁄U Ã∑§ŸË∑§ •ÊÒ⁄U ‚◊SÕÊÁŸ∑§ ßÈÃÊ ÁflÁœ ∑§Ê Áflfl⁄UáÊ ŒËÁ¡∞–
      (c)     Discuss applications of radioisotopes in environmental monitoring.                                                              10

              ⁄UÁ«UÿÊ ‚◊SÕÊÁŸ∑§Ê¥ ∑§Ê ¬ÿʸfl⁄UáÊËÿ ◊ÊÚŸË≈U⁄UŸ ◊¥ •ŸÈ¬˝ÿÊªÊ¥ ∑§Ë øøʸ ∑§ËÁ¡∞–

56.   Explain the process of protein synthesis in eukaryotes with suitable diagrams. Compare
      their process with that occurring in prokaryotes.

      ÿÍ∑§Á⁄U•ÊÚ≈UÊ¥ ◊¥ ©¬ÿÈÄà ÁøòÊÊ¥ ∑§Ë ‚„ÊÿÃÊ ‚ ¬˝Ê≈UËŸ ‚¥‡‹·áÊ ¬˝Á∑˝§ÿÊ ∑§Ê fláʸŸ ∑§ËÁ¡∞– ß‚ ¬˝Á∑˝§ÿÊ ∑§Ë ¬˝Ê∑§Á⁄U•ÊÚ≈UÊ¥ ◊¥
      „Ê ⁄U„Ë ß‚ ¬˝Á∑˝§ÿÊ ‚ ÃÈ‹ŸÊ ∑§ËÁ¡∞–

57.   (a)     What are the measures of central tendency ? Explain the three types of commonly                                                 20
              used central tendencies giving suitable examples of each.

              ∑§ãŒ˝Ëÿ ¬˝flÎÁûÊ ∑§ ◊ʬ ∑§ÊÒŸ ‚ „Ò¥? ‚Ê◊Êãÿ M§¬ ‚ ¬˝ÿÈÄà ÃËŸ ¬˝∑§Ê⁄U ∑§ ∑§ãŒ˝Ëÿ ¬˝flÎÁûÊÿÊ¥ ∑§Ê fláʸŸ ©¬ÿÈÄÃ
              ©ŒÊ„⁄UáÊÊ¥ ∑§Ë ‚„ÊÿÃÊ ‚ ∑§ËÁ¡∞–
      (b)     In a randomised experiment, 400 kids brushed with baking powder and 400 brushed                                                 10
              with toothpaste. 52 (13%) kids who brushed with the baking powder got cavities.
              There is a difference of 3% cavities between the two groups. Obtain a 95% credible
              interval for the true difference. Is the difference significant ?

              ∞∑§ ÿÊŒÎÁë¿U∑§Ë∑Χà ¬˝ÿÊª ◊¥ 400 ’ëøÊ¥ Ÿ ’Á∑¥§ª ¬Ê©«U⁄U •ÊÒ⁄U 400 Ÿ ≈ÍUÕ¬S≈ ‚ ŒÊ°ÃÊ¥ ∑§Ê ‚Ê»§ Á∑§ÿÊ– ’Á∑¥§ª
              ¬Ê©«U⁄U ‚ ’˝È‡Ê ∑§⁄UŸ flÊ‹U 52 (13%) ’ëøÊ¥ ∑§Ê Œ¥Ã ªÈÁ„∑§Ê „Ê ªß¸– ŒÊŸÊ¥ ‚◊Í„Ê¥ ◊¥ 3% ªÈÁ„∑§Ê•Ê¥ ∑§Ê •¥Ã⁄U „Ò–
              ‚àÿ •¥Ã⁄U ∑§ Á‹∞ 95% Áfl‡fl‚ŸËÿ •¥Ã⁄UÊ‹ ∑§Ê ¬ÃÊ ‹ªÊß∞– ÄÿÊ •¥Ã⁄U ‚ÊÕ¸∑§ „Ò?


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RAS-1124 / ATS                                                         8                                                           Biology