aipmt–Past papers<br />BIOLOGY- UNSOLVED PAPER - 1995<br />
SECTION – I (Total Marks : 100)<br />Single Correct Answer Type<br />There are five parts in this question. Four choices a...
01<br />Problem<br />One of  the major difficulties in the biological control of  insect pest is that <br />The method is ...
Problem<br />02<br />Nicotine acts acts  as a stimulant, because it mimics the effect of <br />Testosterone <br />Dopamine...
Problem<br />03<br />The transgenic animals are those which have <br />Foreign RNA in all its cells<br />Foreign DNA in so...
Problem<br />04<br />Antic done is an unpaired triplet of bases in an exposed position<br /> <br />t-RNA<br />m-RNA<br />r...
Problem<br />05<br />In India, human population is heavily weighed towards the younger age groups as a results of  <br />S...
Problem<br />06<br />The citric acid is produced by<br /> <br />Candida utilis<br />Acetobacter suboxydans<br />Aspergillu...
Problem<br />07<br />The blood cancer is known as<br />Haemolysis<br />Haemophilia<br />Leukaemia<br />Thrombosis<br />
Problem<br />08<br />Antigens are present <br />Inside the cytoplasm<br />On nuclear membrane<br />inside the nucleus<br /...
Problem<br />09<br />Which one of the following pairs is not correctly matched <br />Syphilis trichuris trichicura<br />Al...
Problem<br />10<br />Which one the following is the new world spice that has become essential part of Indian cuisine? <br ...
Problem<br />11<br />Which one of the following disease is due to an allergic reaction<br /> <br />Enteric fever<br />Skin...
Problem<br />12<br />The silkworm silk is the product of<br />  <br />Salivary gland of the larva<br />Salivary gland of t...
Problem<br />13<br />The concept that population tends to  increase geometrically while food  supply increases  arithmetic...
Problem<br />14<br />The vitamin C or ascorbic  acid  prevents<br />Scurvy <br />Antibody  synthesis<br />Rickets<br />Pel...
Problem<br />15<br />The rotenone is <br />A natural  herbicide<br />A natural insecticide<br />An insect  hormone<br />A ...
Problem<br />16<br />‘Nothing  lives  for ever,  but life  continues’.  What does it mean? <br />Older  die but new  are p...
Problem<br />17<br />An abnormal  human  male  phenotype  involving  an extra X-chromosome  (XXY) is a case of <br />Edwar...
Problem<br />18<br />An environmental  agent,  which  triggers  transcription  from an operant,  is a  <br />Depressor<br ...
Problem<br />19<br />The phenomenon,  in which  an allele of  one gene suppresses  the  activity  of an  allele  of anothe...
Problem<br />20<br />The point, at which  polytene  chromosome appear  to be  attached  together,  is called  <br />Centro...
Problem<br />21<br />In split  genes, the  coding  sequences  are called<br /> <br />Exons<br />Cistrons<br />Introns<br /...
Problem<br />22<br />The polytene chromosomes  were discovered for the first time in<br /> <br />Drosophila<br />Musca dom...
Problem<br />23<br />When two genetic  loci  produce  identical  phenotypes  in is and trans  position,  they are  conside...
Problem<br />24<br />The lacoperon  is an example  of <br />Repressible  operon<br />Overlapping  genes<br />Arabinoseoper...
Problem<br />25<br />Each  chromosome at  the anaphase stage  of  a bone marrow  cell in our  body has  <br />Two chromati...
Problem<br />26<br />If the DNA  codons are  ATG ATGATG  and a  cytosine  base is inserted  at the  beginning,  then which...
Problem<br />27<br />Barr body in mammals  represents <br />All the heterochromatin  in male and female  cells<br />The Y-...
Problem<br />28<br />The restriction enzymes are used in genetic engineering.  Because <br />They  can cut  DNA at  specif...
Problem<br />29<br />The wild type E. coli cells are growing in normal medium with glucose.  They are transferred to mediu...
Problem<br />30<br />If  the   sequence  of bases  in DNA is ATTCGATG,  then  the sequence of  bases  in its  transcript w...
Problem<br />31<br />At high altitude,  the RBCs  in the  human  blood  will<br /> <br />Increase in  number <br />Decreas...
Problem<br />32<br />When  huge  amount of  sewage  is dumped  into a  river,  its B.O.D. will  <br />Slightly  decrease<b...
Problem<br />33<br />Which of the following  radioactive  isotopes is used  in the  detection  of thyroid  cancer? <br />U...
Problem<br />34<br />If we completely  remove  the decomposers  from an ecosystem,  its  functioning  will be  adversely  ...
Problem<br />35<br />In a biotic  community,  the primary  consumers  are<br /> <br />Detritivores<br />Herbivores<br />Ca...
Problem<br />36<br /> The  abundance of  a species population,  within  its  habitat,  is called<br /> <br />Relative  den...
Problem<br />37<br />Which of the following   causes plague?<br /> <br />Trichinellaspiralis<br />Salmonella  typhimurum<b...
Problem<br />38<br />Identify the  correct  match  between  tiger  reserve  an its  state<br /> <br />Manas – Assam<br />C...
Problem<br />39<br />The TajMahal  is threatened  due to  the effect of<br />  <br />Oxygen <br />Hydrogen<br />Chlorine <...
Problem<br />40<br />In Minamata Bay  japan  the  animals  which  remained  free  Minamata disease, are  <br />Dogs<br />C...
Problem<br />41<br />Which of the following pairs is a sedimentary type of biogeochemical cycle?<br />Phosphorus  and nitr...
Problem<br />42<br />The toxic effect  of carbon  monoxide  is due  to its  greater  affinity for  haemoglobin  as compare...
Problem<br />43<br />Which of the following   isotopes is most dangerous to Homo sapiens?<br />Phosphorus – 32<br />Stront...
Problem<br />44<br />Which of the following is the most stable ecosystem? <br />Mountain <br />Ocean<br />Forest<br />Dese...
Problem<br />45<br />The primary  succession refers  to the  development  of communities  on<br />Forest  clearing  after ...
Problem<br />46<br />A dental disease  characterized by  mottling  of teeth  is due to the  presence of  certain  chemical...
Problem<br />47<br />Which of the following is the main factor of desertification? <br />Over-grazing <br />Tourism<br />I...
Problem<br />48<br />Which one of the following pairs is correctly   matched?<br /> <br />Parasitism – intra – specific  r...
Problem<br />49<br />The  estrous  cycle  is a  characteristic  of  <br />Human females  only <br />Mammalian  females  ot...
Problem<br />50<br />The  carbon  dioxide  is transported  via blood to lungs  mostly<br />In combination with  haemoglobi...
Problem<br />51<br />The mammalian  corpus luteum  produces<br /> <br />Luteotropic hormone<br />Luteinizing  hormone<br /...
Problem<br />52<br />According  to the  accepted  concept  of hormone  action, if  receptor  molecules  are removed  from ...
Problem<br />53<br />In veins,  valves  are present of  cheek  backward  flow of blood  flowing  at <br />Atmospheric  pre...
Problem<br />54<br />The  ventilation movements  of the lungs in  mammals  are governed by<br /> <br />Muscular  walls  of...
Problem<br />55<br />Although much CO2 is  carried  in blood,  yet  blood  does not become  acidic,  because  <br />CO2 is...
Problem<br />56<br />The  lymph  serves to  <br />Return the interstitial  fluid to the  blood <br />Return the WBCs  and ...
Problem<br />57<br />In an  egg, the type of  cleavage is determined by<br />The  amount  and distribution of yolk<br />Th...
Problem<br />58<br />In an  egg, the type of  cleavage is determined by<br />The  amount  and distribution of yolk<br />Th...
Problem<br />59<br />The number  of  floating  ribs,  in the  human  body, is<br /> <br />3 pairs <br />2 pairs<br />6 pai...
Problem<br />60<br />The sympathetic  nerves,  in mammals,  arise from<br /> <br />Sacral nerves <br />3rd, 7th 9th  and 1...
Problem<br />61<br />A polysaccharide,  which  is synthesized  and  stored  in liver  cells, is<br /> <br />Arabinose<br /...
Problem<br />62<br />The desmosomes   are concerned  with <br />Cell division <br />Cell  adherence <br />Cytolysis<br />C...
Problem<br />63<br />The correct route  through  which  pulse-making  impulse  travels  in the heart is  <br />SA node -> ...
Problem<br />64<br />The  haemorrhagic  disease  of  new born  is caused  due to  the  deficiency of <br />Vitamin K<br />...
Problem<br />65<br />The enzyme enterokinase  helps  in  the  conversion  of <br />Caesinogen into  casein <br />Trypsinog...
Problem<br />66<br />The closure  of lid  of pitcher  in pitcher  plant,  is  due to<br /> <br />Paratonic  movement <br /...
Problem<br />67<br />The movement  of water,  from one cell of cortex  to  adjacent  one in  roots,  is due to <br />Accum...
Problem<br />68<br />Which  of the  following  element  plays  an important  role in  biological  nitrogen  fixation ? <br...
Problem<br />69<br />The polyembryony  commonly  occurs  in<br /> <br />Tomato <br />Potato<br />Citrus<br />Turmeric.<br />
Problem<br />70<br />The pigment,  that  absorbs  red and far red light in  plants, is<br />Phytochrome<br />Carotene <br ...
Problem<br />71<br />The CO2 fixation during C4 pathway occurs  in the  chloroplast of <br />Guard  cells<br />Bundle shea...
Problem<br />72<br />The  twinning  of tendrils  around  a support  is a good  example of <br />Phototropism  <br />chemot...
Problem<br />73<br />The change  of the  lighter – coloured  variety  of  peppered  moth  (Bistonbetularia)  to its  darke...
Problem<br />74<br />In an  angiosperm,  how many microspore  mother  cells are required  to produce  100 pollen  grains? ...
Problem<br />75<br />The homologous  organs  are those  that show  similarity  in<br /> <br />Appearance <br />Function<br...
Problem<br />76<br />Which  of the following  is the  matching  pair  of a  sanctuary  and its  main protected  wild  anim...
Problem<br />77<br />The organisms  attached  to the  substratum,  generally,  possess<br /> <br />One single opening  of ...
Problem<br />78<br />The closely  related  morphologically  similar  sympatric  populations,  but reproductively  isolated...
Problem<br />79<br />The  presence  of gill slits, in  the  embryos  of all  vertebrates,  supports the theory  of <br />M...
Problem<br />80<br />Two zoogeographical  regions,   separated  by  high  mountain  ranges, are<br />Nearctic  and Palearc...
Problem<br />81<br />The function  of  contractile  vacuole,  in protozoa,  is<br /> <br />Osmoregulation<br />Reproductio...
Problem<br />82<br />Besides  annelida and arthropoda,  the metamerism  is exhibited by <br />Mollusca<br />Acanthocephala...
Problem<br />83<br />The most  striking  example  of point  mutation  is  found in  a disease called <br /> <br />Down’s s...
Problem<br />84<br />Which  era is dubbed  as the  age of  prokaryotic  microbes?<br />Precambrian <br />Phanerozoic<br />...
Problem<br />85<br />A well  developed  archegonium with  neck  consisting of 4-6 rows and neck  canal  cells,  characteri...
Problem<br />86<br />The sexual  reproduction is  absent  in<br /> <br />Spirogyra<br />Nostoc<br />Ulothrix<br />Volvox.<...
Problem<br />87<br />The anthesis  is a phenomenon,  which  refers to<br /> <br />Development  of anthers <br />Opening  o...
Problem<br />88<br />For the  first  time,  the bacteria  were  observed by<br /> <br />Robert  Koch <br />A.V. Leeuwenhoe...
Problem<br />89<br />The plant  body of moss  (Fun aria) is  <br />Completely  sporophyte<br />Predominantly gametophyte  ...
Problem<br />90<br />The  black  rest  of  wheat  is  a fungal  disease caused  by <br />Albugo  candida <br />Puccinia  g...
Problem<br />91<br />The  pyrenoids  are made  up of  <br />Proteinaceous  centre  and starchy  sheath <br />Core of  nucl...
Problem<br />92<br />A large  number of  organic  compounds  can be  decomposed by<br /> <br />Azotobacter<br />Chemolitho...
Problem<br />93<br />The  tailed  Bacteriophages are  <br />Motile  on  surface  of bacteria <br />Non-motile <br />Motile...
Problem<br />94<br />The smut  of maize  is caused by <br />Ustilago avenae<br />Ustilago nuda<br />Ustilago  hordei <br /...
Problem<br />95<br />Which  of the  following  organism  possesses  characteristics  of  a plant  and an animal? <br />Eug...
Problem<br />96<br />The primary  acceptor,  during CO2 fixation in C3 plants,  is<br />Phosphoenolpuruvate  (PEP)<br />Ri...
Problem<br />97<br />The  organism,  used for  alcohol fermentation,  is<br /> <br />Aepergillus<br />Saccharomyces<br />P...
Problem<br />98<br />Agar is  commercially  obtained from<br /> <br />Red algae <br />Blue-green  algae<br />Brown  algae ...
Problem<br />99<br />The  prlaryotic  flagella  possess <br />Helically  arranged protein  molecule <br />“ 9 + 2 “ membra...
Problem<br />100<br />The an thesis  is a phenomenon,  which  refers to<br /> <br />Development  of anthers <br />Opening ...
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AIPMT Biology 1995

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  • AIPMT Biology 1995

    1. 1. aipmt–Past papers<br />BIOLOGY- UNSOLVED PAPER - 1995<br />
    2. 2. SECTION – I (Total Marks : 100)<br />Single Correct Answer Type<br />There are five parts in this question. Four choices are given for each part and one of them is correct. Indicate you choice of the correct answer for each part in your answer-book by writing the letter (a), (b), (c) or (d) whichever is appropriate<br />
    3. 3. 01<br />Problem<br />One of the major difficulties in the biological control of insect pest is that <br />The method is less effective as compared with the use of insecticides<br />The practical difficulty of introducing the predator to specified areas<br />The predator develops a preference to other diets and may itself become a pest<br />The predator does not always survive when transferred to a new environment<br />
    4. 4. Problem<br />02<br />Nicotine acts acts as a stimulant, because it mimics the effect of <br />Testosterone <br />Dopamine <br />Thyroxin <br />Acetylcholine<br />
    5. 5. Problem<br />03<br />The transgenic animals are those which have <br />Foreign RNA in all its cells<br />Foreign DNA in some of its cells<br />Foreign DNA in all its cells<br />Both ‘a’ and ‘b’<br />
    6. 6. Problem<br />04<br />Antic done is an unpaired triplet of bases in an exposed position<br /> <br />t-RNA<br />m-RNA<br />r-RNA<br />both ‘b’ and ‘c’<br />
    7. 7. Problem<br />05<br />In India, human population is heavily weighed towards the younger age groups as a results of  <br />Short life span of many individuals and high birth rate<br />Long life span of many individuals and high birth rate<br />Short life span of many individuals and low birth rate<br />Long life span of many individuals and low birth rate.<br />
    8. 8. Problem<br />06<br />The citric acid is produced by<br /> <br />Candida utilis<br />Acetobacter suboxydans<br />Aspergillus niger<br />Streptococcus lsctis<br />
    9. 9. Problem<br />07<br />The blood cancer is known as<br />Haemolysis<br />Haemophilia<br />Leukaemia<br />Thrombosis<br />
    10. 10. Problem<br />08<br />Antigens are present <br />Inside the cytoplasm<br />On nuclear membrane<br />inside the nucleus<br />On cell surface<br />
    11. 11. Problem<br />09<br />Which one of the following pairs is not correctly matched <br />Syphilis trichuris trichicura<br />Aleeping sickness typanosoma gambiense<br />Dengue fever- arbovirus<br />Plague yersinia pesis<br />
    12. 12. Problem<br />10<br />Which one the following is the new world spice that has become essential part of Indian cuisine? <br />Red pepper<br />Black pepper<br />Ginger<br />Cardamom<br />
    13. 13. Problem<br />11<br />Which one of the following disease is due to an allergic reaction<br /> <br />Enteric fever<br />Skin cancer<br />Goiter<br />Hay fever<br />
    14. 14. Problem<br />12<br />The silkworm silk is the product of<br />  <br />Salivary gland of the larva<br />Salivary gland of the adult<br />Cuticle of the larva<br />Cuticle of the adult<br />
    15. 15. Problem<br />13<br />The concept that population tends to increase geometrically while food supply increases arithmetically’ was put forward by <br />Thomas Malthus<br />Charles Darwin <br />Stuart Mill<br />Adam Smith.<br />
    16. 16. Problem<br />14<br />The vitamin C or ascorbic acid prevents<br />Scurvy <br />Antibody synthesis<br />Rickets<br />Pellagra.<br />
    17. 17. Problem<br />15<br />The rotenone is <br />A natural herbicide<br />A natural insecticide<br />An insect hormone<br />A bioherbicide.<br />
    18. 18. Problem<br />16<br />‘Nothing lives for ever, but life continues’. What does it mean? <br />Older die but new are produced due to reproduction<br />Nothing can produce without death<br />Death has nothing to do with the continuation of life<br />Parthenogenesis is must for sexual reproduction.<br />
    19. 19. Problem<br />17<br />An abnormal human male phenotype involving an extra X-chromosome (XXY) is a case of <br />Edward’s syndrome<br />Klinefelter’s syndrome<br />Intersex <br />Down’s syndrome. <br />
    20. 20. Problem<br />18<br />An environmental agent, which triggers transcription from an operant, is a  <br />Depressor<br />Controlling element<br />Regulator<br />Inducer.<br />
    21. 21. Problem<br />19<br />The phenomenon, in which an allele of one gene suppresses the activity of an allele of another gene, is known as<br />  <br />Epistasis<br />Dominance<br />Suppression<br />Inactivation. <br />
    22. 22. Problem<br />20<br />The point, at which polytene chromosome appear to be attached together, is called  <br />Centromere<br />Chromomere<br />Chromocentre<br />Centriole. <br />
    23. 23. Problem<br />21<br />In split genes, the coding sequences are called<br /> <br />Exons<br />Cistrons<br />Introns<br />Operons.<br />
    24. 24. Problem<br />22<br />The polytene chromosomes were discovered for the first time in<br /> <br />Drosophila<br />Musca domestica<br />Chironomus<br />Musca nebula.<br />
    25. 25. Problem<br />23<br />When two genetic loci produce identical phenotypes in is and trans position, they are considered to be <br />Multiple alleles<br />The parts of same gene<br />Pseudoalleles<br />Different genes.<br />
    26. 26. Problem<br />24<br />The lacoperon is an example of <br />Repressible operon<br />Overlapping genes<br />Arabinoseoperon<br />Inducible operon.<br />
    27. 27. Problem<br />25<br />Each chromosome at the anaphase stage of a bone marrow cell in our body has  <br />Two chromatids<br />Several chromatids<br />No chromatids<br />Only one chromatid.<br />
    28. 28. Problem<br />26<br />If the DNA codons are ATG ATGATG and a cytosine base is inserted at the beginning, then which of the following will result?<br />CAT GAT GATG<br />A non-sense mutation <br />C ATG ATGATG<br />CA TGA TGA TG.<br />
    29. 29. Problem<br />27<br />Barr body in mammals represents <br />All the heterochromatin in male and female cells<br />The Y-chromosome in somatic cells of male <br />All the heterochromatin in female cells<br />One of the two X-chromosomes in somatic cells of females.<br />
    30. 30. Problem<br />28<br />The restriction enzymes are used in genetic engineering. Because <br />They can cut DNA at specific base sequence <br />They are nucleases that cut DNA at variable sites<br />They can degrade harmful proteins<br />They can join different DNA fragments. <br />
    31. 31. Problem<br />29<br />The wild type E. coli cells are growing in normal medium with glucose. They are transferred to medium containing only lactose as sugar. Which of the following changes take place? <br />The lacoperon is induced<br />E. coli cells stop dividing<br />The lacoperon is repressed<br />All Operon are induced<br />
    32. 32. Problem<br />30<br />If the sequence of bases in DNA is ATTCGATG, then the sequence of bases in its transcript will be  <br />GUAGCUUA<br />AUUCGAUG<br />CAUCGAAU<br />UAAGCUAC.<br />
    33. 33. Problem<br />31<br />At high altitude, the RBCs in the human blood will<br /> <br />Increase in number <br />Decrease in number<br />Increase in size<br />Decrease in size.<br />
    34. 34. Problem<br />32<br />When huge amount of sewage is dumped into a river, its B.O.D. will  <br />Slightly decrease<br />Remain unchanged<br />Increase <br />Decrease.<br />
    35. 35. Problem<br />33<br />Which of the following radioactive isotopes is used in the detection of thyroid cancer? <br />Uranium-238<br />Phosphorus-131<br />Iodine-131<br />Carbon-14.<br />
    36. 36. Problem<br />34<br />If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because  <br />Mineral movement will be blocked <br />The rate of decomposition will be very high <br />Energy flow will be blocked <br />Herbivores will not receive solar energy.<br />
    37. 37. Problem<br />35<br />In a biotic community, the primary consumers are<br /> <br />Detritivores<br />Herbivores<br />Carnivores<br />Omnivores.<br />
    38. 38. Problem<br />36<br /> The abundance of a species population, within its habitat, is called<br /> <br />Relative density <br />Regional density <br />Absolute density <br />Niche density.<br />
    39. 39. Problem<br />37<br />Which of the following causes plague?<br /> <br />Trichinellaspiralis<br />Salmonella typhimurum<br />Yersiniapestis<br />Leishmaniadonovani.<br />
    40. 40. Problem<br />38<br />Identify the correct match between tiger reserve an its state<br /> <br />Manas – Assam<br />Corbett – Madhya Pradesh<br />Bandipur – Tamil Nadu<br />Palanau – Orissa.<br />
    41. 41. Problem<br />39<br />The TajMahal is threatened due to the effect of<br />  <br />Oxygen <br />Hydrogen<br />Chlorine <br />Sulphur-dioxide.<br />
    42. 42. Problem<br />40<br />In Minamata Bay japan the animals which remained free Minamata disease, are  <br />Dogs<br />Cats<br />Pigs<br />Rabbits.<br />
    43. 43. Problem<br />41<br />Which of the following pairs is a sedimentary type of biogeochemical cycle?<br />Phosphorus and nitrogen <br />Phosphorus and nitrogen <br />Oxygen and nitrogen <br />Phosphorus and carbon dioxide.<br />
    44. 44. Problem<br />42<br />The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen approximately by <br />200 times<br />1000 times<br />2 times<br />20 times<br />
    45. 45. Problem<br />43<br />Which of the following isotopes is most dangerous to Homo sapiens?<br />Phosphorus – 32<br />Strontium-90<br />Cesium –137<br />Iodine –131<br />
    46. 46. Problem<br />44<br />Which of the following is the most stable ecosystem? <br />Mountain <br />Ocean<br />Forest<br />Desert.<br />
    47. 47. Problem<br />45<br />The primary succession refers to the development of communities on<br />Forest clearing after devastating fire<br />Newly-exposed habitat with no record of earlier vegetation <br />Freshly cleared crop field <br />Pond, freshly filled with water after a dry phase.<br />
    48. 48. Problem<br />46<br />A dental disease characterized by mottling of teeth is due to the presence of certain chemical element in drinking water. Which of the following is that element? <br />Fluorine<br />Boron<br />Mercury <br />Chlorine.<br />
    49. 49. Problem<br />47<br />Which of the following is the main factor of desertification? <br />Over-grazing <br />Tourism<br />Irrigated agriculture<br />All of these<br />
    50. 50. Problem<br />48<br />Which one of the following pairs is correctly matched?<br /> <br />Parasitism – intra – specific relationship<br />Uricotelism – aquatic habitat<br />Excessive perspiration - xeric adaptation <br />Stream lined body – aquatic adaptation.<br />
    51. 51. Problem<br />49<br />The estrous cycle is a characteristic of  <br />Human females only <br />Mammalian females other than primates<br />Human males only<br />Mammalian males other than primates.<br />
    52. 52. Problem<br />50<br />The carbon dioxide is transported via blood to lungs mostly<br />In combination with haemoglobin only<br />Dissolved in blood plasma<br />In the form of carbonic acid only<br />As carbaminohaemoglobin and as carbonic acid.<br />
    53. 53. Problem<br />51<br />The mammalian corpus luteum produces<br /> <br />Luteotropic hormone<br />Luteinizing hormone<br />Estrogen <br />Progesteron.<br />
    54. 54. Problem<br />52<br />According to the accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will <br />Continue to respond to the hormone without any difference <br />Not respond to the hormone<br />Continue to respond to the hormone but will require higher concentration<br />Continue to respond to the hormone but in the opposite way.<br />
    55. 55. Problem<br />53<br />In veins, valves are present of cheek backward flow of blood flowing at <br />Atmospheric pressure <br />High pressure <br />Low pressure <br />All of these.<br />
    56. 56. Problem<br />54<br />The ventilation movements of the lungs in mammals are governed by<br /> <br />Muscular walls of lung<br />Diaphragm<br />Coastal muscles <br />Both ‘b’ and ‘c’.<br />
    57. 57. Problem<br />55<br />Although much CO2 is carried in blood, yet blood does not become acidic, because  <br />CO2 is continuously diffused through the tissues and is not allowed to accumlate<br />In CO2 transport, blood buffers play an important role<br />CO2 is absorbed by the leucocytes<br />CO2 combines with water to form H2CO3 which is neutralized by NaCO3.<br />
    58. 58. Problem<br />56<br />The lymph serves to  <br />Return the interstitial fluid to the blood <br />Return the WBCs and RBcs to the lymph nodes<br />Transport CO2 to the lungs<br />Transport O2 to the brain.<br />
    59. 59. Problem<br />57<br />In an egg, the type of cleavage is determined by<br />The amount and distribution of yolk<br />The number of egg membranes<br />The shape and size of the sperm<br />The size and location of the nucleus<br />
    60. 60. Problem<br />58<br />In an egg, the type of cleavage is determined by<br />The amount and distribution of yolk<br />The number of egg membranes<br />The shape and size of the sperm<br />The size and location of the nucleus<br />
    61. 61. Problem<br />59<br />The number of floating ribs, in the human body, is<br /> <br />3 pairs <br />2 pairs<br />6 pairs <br />5 pairs.<br />
    62. 62. Problem<br />60<br />The sympathetic nerves, in mammals, arise from<br /> <br />Sacral nerves <br />3rd, 7th 9th and 10th cranial nerves <br />thoraco-lumbar nerves<br />cervical nerves.<br />
    63. 63. Problem<br />61<br />A polysaccharide, which is synthesized and stored in liver cells, is<br /> <br />Arabinose<br />Glycogen<br />Lactose<br />Galactose.<br />
    64. 64. Problem<br />62<br />The desmosomes are concerned with <br />Cell division <br />Cell adherence <br />Cytolysis<br />Cellular excretion.<br />
    65. 65. Problem<br />63<br />The correct route through which pulse-making impulse travels in the heart is  <br />SA node -> Purkinje fibres -> bundle of His -> AV node -> hear muscles <br />SA node -> AV node -> bundle of His -> Purkinje fibres -> heart muscles <br />AV node -> bundle of His -> SA node -> Purkinje fibres -> heart muscles <br />AV node -> SA node -> Purkinje fibres -> bundle of His -> heart muscles.<br />
    66. 66. Problem<br />64<br />The haemorrhagic disease of new born is caused due to the deficiency of <br />Vitamin K<br />Vitamin B12<br />Vitamin A<br />Vitamin B1.<br />
    67. 67. Problem<br />65<br />The enzyme enterokinase helps in the conversion of <br />Caesinogen into casein <br />Trypsinogen into trypsin<br />Pepsinogen into pepsin<br />Proteins into polypeptides.<br />
    68. 68. Problem<br />66<br />The closure of lid of pitcher in pitcher plant, is due to<br /> <br />Paratonic movement <br />Autonomous movement <br />Turgor movement <br />Tropic movement.<br />
    69. 69. Problem<br />67<br />The movement of water, from one cell of cortex to adjacent one in roots, is due to <br />Accumulation of inorganic salts in the cells<br />Accumulation of organic compounds in the cells<br />Water potential gradient<br />Chemical potential gradient.<br />
    70. 70. Problem<br />68<br />Which of the following element plays an important role in biological nitrogen fixation ? <br />Copper <br />Molybdenum<br />Zinc<br />Manganes.<br />
    71. 71. Problem<br />69<br />The polyembryony commonly occurs in<br /> <br />Tomato <br />Potato<br />Citrus<br />Turmeric.<br />
    72. 72. Problem<br />70<br />The pigment, that absorbs red and far red light in plants, is<br />Phytochrome<br />Carotene <br />Xanthophyll<br />Cytochrome<br />
    73. 73. Problem<br />71<br />The CO2 fixation during C4 pathway occurs in the chloroplast of <br />Guard cells<br />Bundle sheathe cells <br />Mesophyll cells <br />Spongy parenchyma.<br />
    74. 74. Problem<br />72<br />The twinning of tendrils around a support is a good example of <br />Phototropism <br />chemotropism <br />Nastic movements <br />Thigmotropism.<br />
    75. 75. Problem<br />73<br />The change of the lighter – coloured variety of peppered moth (Bistonbetularia) to its darker variety (Bistoncarbonaria ) is due to  <br />Mutation <br />Regeneration <br />Genetic isolation <br />Temporal isolation.<br />
    76. 76. Problem<br />74<br />In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains? <br />75<br />100<br />25<br />50.<br />
    77. 77. Problem<br />75<br />The homologous organs are those that show similarity in<br /> <br />Appearance <br />Function<br />Origin<br />Size.<br />
    78. 78. Problem<br />76<br />Which of the following is the matching pair of a sanctuary and its main protected wild animal? <br />Kaziranga - Musk deer <br />Gir – Lion <br />Sunderban - Rhino<br />All of these. <br />
    79. 79. Problem<br />77<br />The organisms attached to the substratum, generally, possess<br /> <br />One single opening of the digestive canal <br />Cilia on the surface to create water current <br />Radial symmetry <br />Asymmetrical body.<br />
    80. 80. Problem<br />78<br />The closely related morphologically similar sympatric populations, but reproductively isolated, are designated as  <br />Clones <br />Sibling species<br />Clines <br />Demes.<br />
    81. 81. Problem<br />79<br />The presence of gill slits, in the embryos of all vertebrates, supports the theory of <br />Metamorphosis <br />Biogenesis<br />Organic evolution <br />Recapitulation.<br />
    82. 82. Problem<br />80<br />Two zoogeographical regions, separated by high mountain ranges, are<br />Nearctic and Palearctic<br />Neotropical and Ethiopian <br />Oriental and Australian <br />Palaearctic and Oriental.<br />
    83. 83. Problem<br />81<br />The function of contractile vacuole, in protozoa, is<br /> <br />Osmoregulation<br />Reproduction <br />Locomotion <br />Digestion of food.<br />
    84. 84. Problem<br />82<br />Besides annelida and arthropoda, the metamerism is exhibited by <br />Mollusca<br />Acanthocephala<br />Cestoda<br />Chordata.<br />
    85. 85. Problem<br />83<br />The most striking example of point mutation is found in a disease called <br /> <br />Down’s syndrome<br />Sickle cell anaemia<br />Thalassemia<br />Night blindness.<br />
    86. 86. Problem<br />84<br />Which era is dubbed as the age of prokaryotic microbes?<br />Precambrian <br />Phanerozoic<br />Archean<br />Proterozoic.<br />
    87. 87. Problem<br />85<br />A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterizes<br />Gymnoperms and flowering plants <br />Pteridophytes and gymnosperms <br />Gymnosperms only<br />Bryophytes and pteridophytes.<br />
    88. 88. Problem<br />86<br />The sexual reproduction is absent in<br /> <br />Spirogyra<br />Nostoc<br />Ulothrix<br />Volvox.<br />
    89. 89. Problem<br />87<br />The anthesis is a phenomenon, which refers to<br /> <br />Development of anthers <br />Opening of flower bud<br />Stigma receptors <br />All of these.<br />
    90. 90. Problem<br />88<br />For the first time, the bacteria were observed by<br /> <br />Robert Koch <br />A.V. Leeuwenhoek <br />W.H. Stanley <br />Louis Pasteur.<br />
    91. 91. Problem<br />89<br />The plant body of moss (Fun aria) is  <br />Completely sporophyte<br />Predominantly gametophyte with sporophyte<br />Completely gametophyte <br />Predominantly sporophyte with gametophyte.<br />
    92. 92. Problem<br />90<br />The black rest of wheat is a fungal disease caused by <br />Albugo candida <br />Puccinia graminis tritici <br />Melampsora lini<br />Clevicepspurpurea.<br />
    93. 93. Problem<br />91<br />The pyrenoids are made up of  <br />Proteinaceous centre and starchy sheath <br />Core of nucleic acid surrounded by protein sheath <br />Core of protein surrounded by fatty sheath <br />Core of starch surrounded by sheath of protein.<br />
    94. 94. Problem<br />92<br />A large number of organic compounds can be decomposed by<br /> <br />Azotobacter<br />Chemolithotrophs<br />Mycoplasma<br />Pseudomonas. <br />
    95. 95. Problem<br />93<br />The tailed Bacteriophages are  <br />Motile on surface of bacteria <br />Non-motile <br />Motile on surface of plant leaves <br />Actively motile in water. <br />
    96. 96. Problem<br />94<br />The smut of maize is caused by <br />Ustilago avenae<br />Ustilago nuda<br />Ustilago hordei <br />Ustilagomaydis. <br />
    97. 97. Problem<br />95<br />Which of the following organism possesses characteristics of a plant and an animal? <br />Euglena <br />Paramecium<br />Bacteria <br />Mycoplasma.<br />
    98. 98. Problem<br />96<br />The primary acceptor, during CO2 fixation in C3 plants, is<br />Phosphoenolpuruvate (PEP)<br />Ribulose 1, 5-diphosphate (RuDP)<br />Phosphoglyceric acid (PGA)<br />Ribulosemonophosphate (RMP).<br />
    99. 99. Problem<br />97<br />The organism, used for alcohol fermentation, is<br /> <br />Aepergillus<br />Saccharomyces<br />Pseudomonas<br />Penicillium.<br />
    100. 100. Problem<br />98<br />Agar is commercially obtained from<br /> <br />Red algae <br />Blue-green algae<br />Brown algae <br />Green algae. <br />
    101. 101. Problem<br />99<br />The prlaryotic flagella possess <br />Helically arranged protein molecule <br />“ 9 + 2 “ membrane enclosed structure <br />unit membrane enclosed fibre<br />protein membrane enclosed fibre. <br />
    102. 102. Problem<br />100<br />The an thesis is a phenomenon, which refers to<br /> <br />Development of anthers <br />Opening of flower bud<br />Stigma receptors <br />All of these.<br />
    103. 103. For solution visit www.vasista.net<br />

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