aipmt–Past papers<br />BIOLOGY- UNSOLVED PAPER - 1994<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 />Which among the following is likely to have the highest levels of D.D.T. depositions in its body?<br ...
Problem<br />02<br />Which one of the following gasses contributes maximum to the ‘green house effect’ on the earth?<br />...
Problem<br />03<br />The dominant second trophic level, in a lake ecosystem, is<br />Phytoplankton <br />Zooplankton <br /...
Problem<br />04<br />Sounds above what level are considered hazardous noise pollution?<br />Above 80 dB<br />Above 30 dB<b...
Problem<br />05<br />Which of the following species does not have the ability to fix atmospheric nitrogen?<br />Azjitibact...
Problem<br />06<br />The most important human activity, leading to the extinction of wildlife, is<br />pollution of air an...
Problem<br />07<br />if excess water passes out from the tissue without being restored by the kidneys, the cells would <br...
Problem<br />08<br />Which one of the four parts mentioned below does not constitute of part of single uriniferous tubule?...
Problem<br />09<br />The pace setter in the heart is called<br />Sino-atrial node (SAN)<br />Atrio-ventricular node (AVN)<...
Problem<br />10<br />Which of the following does not have an open circulatory system?<br />Frog’s tadpole <br />Prawn <br ...
Problem<br />11<br />In man and mammals, air passes from outside into the lungs through<br />Nasal cavity, larynx, pharynx...
Problem<br />12<br />Which of the following is correct pairing of site of action and substrate of rennin?<br />Mouth-starc...
Problem<br />13<br />What is true about cleavage in the fertilized egg in humans?<br />It starts while the egg is in fallo...
Problem<br />14<br />The heart sound ‘dup’ is produced when <br />Mitral valve is closed<br />Semi-lunar valves at the bas...
Problem<br />15<br />Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are <br ...
Problem<br />16<br />The respiratory center, which regulates respiration, is located in<br />Cerebellum <br />Medulla oblo...
Problem<br />17<br />Prolonged deficiency of nicotinic and causes<br />Pellagra<br />Xerophthalmia<br />Osteomalacia<br />...
Problem<br />18<br />The extra embryonic membranes of the mammalian embryo are derived from<br />Trophoblast<br />Inner ce...
Problem<br />19<br />In the 28 day human  ovarian cycle,  the ovulation  takes  place typically  on <br />Day 14 of the cy...
Problem<br />20<br />The immediate cause  of induction of  ovulation in  human female  is the large  plasma  surge of <br ...
Problem<br />21<br />The type of  joint between  the human skull  bones is called<br />Cartilaginous joint<br />Hinge join...
Problem<br />22<br />Which of the following components is a part of the pectoral girdle?<br />Sternum<br />Acetabulum<br /...
Problem<br />23<br />Which of the following is the function of enterogastrone?<br />It inhibits  the secretion  of gastric...
Problem<br />24<br />An epithelial  tissue  which has thin  flat cells,  arranged edge to so as  to appear  like  closely ...
Problem<br />25<br />A plant bears fruit, has a column of vascular tissue and a tap root system.  This  plant is a <br />A...
Problem<br />26<br />Haploid  plants  can be  obtained  by culturing<br />Pollen  grains<br />Root tips<br />Young leaves<...
Problem<br />27<br />Besides  giving  out secretory  vesicles,  the golgi apparatus is  also  concerned  with the  formati...
Problem<br />28<br />Which one of the following changes involved is irrelevant, in the evolution of man?<br />Perfection  ...
Problem<br />29<br />Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired ch...
Problem<br />30<br />Coolum  derived  from blastocoels is known  as<br />Pseudocoelom<br />Schizocoel<br />Haemocoel<br />...
Problem<br />31<br />A common characteristic of al vertebrates  without  exception is<br />The  division  of body  into he...
Problem<br />32<br />Tube  feet are the  characteristic  structures of<br />Starfish<br />Jellyfish<br />Crayfish<br />Cut...
Problem<br />33<br />Among  the following organisms  point out a completely  non-parasitic  form<br />Tape worm <br />Mosq...
Problem<br />34<br />Which of the following is an example of platy helminthes?<br />Plasmodium<br />Schistosoma<br />Trypa...
Problem<br />35<br />Radial  symmetry is, usually, exhibited  in animals  which<br />Are attached  to the  substratum<br /...
Problem<br />36<br /> One of  the  special  characters  of coelenterate only is  the occurrence of<br />Polymorphism<br />...
Problem<br />37<br />There are special proteins that help to open up DNA double helix in front of the replication fork. Th...
Problem<br />38<br />There are special proteins that help to open up DNA double helix in front of the replication fork. Th...
Problem<br />39<br />Initiation  codon  in eukaryotes is<br />GAU<br />AGU<br />AUG<br />UAG.<br />
Problem<br />40<br />The  earliest  fossil  form,  in the phylogeny  of horse,  is<br />Equus<br />Mesohippus<br />Eohippu...
Problem<br />41<br />Which of the following is pair of homologous organs?<br />Plectoral  fin of rohu  and fore-limb of ho...
Problem<br />42<br />Plants,  but not  animals,  can  convert fatty  acids to  sugars  by a series  of reactions called <b...
Problem<br />43<br />The inner  membrane of the mitochondria  is, usually,  highly  convoluted  forming  a series of  in  ...
Problem<br />44<br />In a somatic cell cycle, DNA  synthesis  takes  place  in<br />G1 phase<br />Prophase  of mitosis <br...
Problem<br />45<br />Which one of the  following  organelles  is located near the  nucleus  and contains  a collection of ...
Problem<br />46<br />Centro mere  is required for <br />Replication  of DNA<br />Chromosome  segregation<br />Pole ward mo...
Problem<br />47<br />Which of the following represents the best stage to view the shape, size and number of chromosomes?<b...
Problem<br />48<br />The first phase in the breakdown  of glucose, in  animal  cell, is<br />Fermenation<br />Kerbl’s cycl...
Problem<br />49<br />In protein synthesis, the polymerization of amino acids involves three steps. Which one of the follow...
Problem<br />50<br />In mitochondria,  cristae act as  sites for<br />Protein  synthesis<br />Phosphorylation of flavoprot...
Problem<br />51<br />A red blood cell was kept in a solution for a few minutes, where is got burst.  The solution  taken  ...
Problem<br />52<br />Which of the following organelles contain enzymes that have digestive action?<br />Ribosomes<br />Pol...
Problem<br />53<br />The four elements  that make up 99% of  all elements  found in  a living  system are <br />C, H, O an...
Problem<br />54<br />When yeast  ferments  glucose,  the products  obtained are<br />Ethanol and CO2 <br />Methanol and CO...
Problem<br />55<br />Which of the following organelles is related with genetic engineering?<br />Mitochondria<br />Plasmid...
Problem<br />56<br />Organisms, which fix atmospheric nitrogen in soil, fall under the category  of<br />Bacteria <br />Gr...
Problem<br />57<br />The colour blindness is more likely to occur in males than in females because<br />The Y-chromosome o...
Problem<br />58<br />A cell-coded protein that is formed in response to infection, with most animal viruses, is called<br ...
Problem<br />59<br />Which of the following statements is correct with reference to a test tube baby?<br />Fertilization o...
Problem<br />60<br />Albinism is a congenital disorder resulting from the lack of the enzyme<br />Tyrosinase<br />Xanthine...
Problem<br />61<br />A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is ca...
Problem<br />62<br />Which one of the following is correctly matches a sexually transmitted disease with its pathogen?<br ...
Problem<br />63<br />Silk is produced by <br />Adult moth<br />Cocoon<br />Larva <br />Both (a) and (c).<br />
Problem<br />64<br />Which among the following is the real product of the honey bee?<br />Honey<br />Propolis<br />Pollen<...
Problem<br />65<br />The main reason why antibodies could not solve all the problems of bacteria mediated disease is<br />...
Problem<br />66<br />Tobacco mosaic virus (TMV) genes are<br />Single stranded RNA <br />Double stranded DNA <br />Protein...
Problem<br />67<br />Biological  control of agricultural  pests,  unlike  chemical control, is<br />Self perpetuating <br ...
Problem<br />68<br />Calcium  deficiency  in the body  occurs in the absence of<br />Vitamin C<br />Vitamin D<br />Vitamin...
Problem<br />69<br />In cheese  manufacture,  the microorganisms  are important for<br />The ripening only <br />The souri...
Problem<br />70<br />Lac operon’ in  E. coli, is  induced by<br />‘I’ gene<br />promoter gene<br />   -galactosidase<br />...
Problem<br />71<br />Transduction  in bacteria  is mediated by<br />Plasmid  vectors <br />Phage vectors<br />Cosmos <br /...
Problem<br />72<br />Which one of the following statements is correct?<br />Legumes fix nitrogen only through the  special...
Problem<br />73<br />Which of the following necleotide sequences contains 4 pyrimidine bases?<br />GATCAATGC<br />GCUAGACA...
Problem<br />74<br />A child’s blood group is ‘O’. The parent’s  blood groups cannot be<br />A and B <br />A and A<br />AB...
Problem<br />75<br />Which statement best explains the evolutionary advantage of meiosis?<br />Meiosis  is necessary  for ...
Problem<br />76<br />A metastatic  cancerous  tumor  is termed’  sarcoma’ if the  disorder  is in<br />Fibroblasts<br />Ci...
Problem<br />77<br />Normally DNA molecule has A-T, G-C pairing.  However, these owing to rearrangements called  <br />Fra...
Problem<br />78<br />The genes,  which  remain  confined to  differential  region of Y-chromosome, are <br />Autosomal  ge...
Problem<br />79<br />The process of  mating  of individuals,  which are more closely  related than  the average  of the  p...
Problem<br />80<br />The nuclease  enzyme, which  begins its  attack from free and of a polynucleotide,  is <br />Polymera...
Problem<br />81<br />The ultimate  respiratory  substrate,  yielding  maximum  number  of ATP molecules, is <br />Glycogen...
Problem<br />82<br />Posions like cyanide inhibit Na+ efflux and K+ influx during cellular transport.  This inhibitory eff...
Problem<br />83<br />During  light  reaction  of photosynthesis,  which of  the following  phenomenon  is observed during ...
Problem<br />84<br />As a tree grows older, which of the following increases more rapidly in thickness?<br />Heart wood<br...
Problem<br />85<br />Caesarian strip  occurs in  a<br />Endodermis<br />Exodermises<br />Epicycle<br />Epidermis.<br />
Problem<br />86<br />The 1992 Nobel Prize  for  medicine  was  awarded  to Edmond H. Fischer and  Edwin Jokers for their w...
Problem<br />87<br />Precambrian is situated just behind apical meristem.  Procambium gives  rise to <br />Primary  vascul...
Problem<br />88<br />Which of the following pigments acts as a reaction centre durin photosynthesis?<br />Carotene<br />Ph...
Problem<br />89<br />Embryo sac represents<br />Megaspore<br />Mega gametophyte<br />Megasporophyll<br />Megagamete.<br />
Problem<br />90<br />When pollen  of a flower  transferred to the stigma of another flower  of the  same  plant,  the poll...
Problem<br />91<br />If the  growing  plant is  decapitated,  then<br />Its growth  stops<br />Leaves become  yellow  and ...
Problem<br />92<br />The movement   of auxin  is largely<br />Centripetal <br />Basipetal<br />Acropetal<br />Both ‘a’ and...
Problem<br />93<br />Rickettsiae  form a group  under<br />Viruses<br />Bacteria<br />Fungi<br />A category between viruse...
Problem<br />94<br />Hypanthodium is a specialized  type of<br />Fruit <br />Inflorescence <br />Thalamus<br />Ovary.<br />
Problem<br />95<br />In bryophytes<br />Both generations  are independent <br />Gametophytes  are dependent  upon  saproph...
Problem<br />96<br />In Pinus,  the wing  of  the seed  develops  from<br />Ovuliferous  scale<br />Integument<br />Nucell...
Problem<br />97<br />In chlorophyceae,  the mode  of sexual  reproduction  is<br />Isogamy<br />Anisogamy<br />Oogamy<br /...
Problem<br />98<br />The protests have<br />Only free  nucleic and  aggregates<br />Membrane  bound  nucleo  proteins lyin...
Problem<br />99<br />Mycorrhiza  exhibits  the phenomenon of<br />Parasitism <br />Symbiosis<br />Antagonism<br />Endemism...
Problem<br />100<br />Many blue-green algae occur in thermal springs (hot water springs). The temperature  tolerance  of t...
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AIPMT Biology 1994

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  • AIPMT Biology 1994

    1. 1. aipmt–Past papers<br />BIOLOGY- UNSOLVED PAPER - 1994<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 />Which among the following is likely to have the highest levels of D.D.T. depositions in its body?<br />Sea gull<br />Phytoplankton<br />Eel<br />Crab<br />
    4. 4. Problem<br />02<br />Which one of the following gasses contributes maximum to the ‘green house effect’ on the earth?<br />Carbon dioxide <br />Chlorofluoro carbon <br />Freon <br />Methane<br />
    5. 5. Problem<br />03<br />The dominant second trophic level, in a lake ecosystem, is<br />Phytoplankton <br />Zooplankton <br />Benthos <br />Plankton<br />
    6. 6. Problem<br />04<br />Sounds above what level are considered hazardous noise pollution?<br />Above 80 dB<br />Above 30 dB<br />Above 150 dB<br />Above 120 dB<br />
    7. 7. Problem<br />05<br />Which of the following species does not have the ability to fix atmospheric nitrogen?<br />Azjitibactor<br />Anavaena<br />Nostoc<br />Spirogyra<br />
    8. 8. Problem<br />06<br />The most important human activity, leading to the extinction of wildlife, is<br />pollution of air and water <br />hunting for valuable wildlife products<br />introduction of alien species<br />alteration and destruction of the natural habitats<br />
    9. 9. Problem<br />07<br />if excess water passes out from the tissue without being restored by the kidneys, the cells would <br />burst open and die<br />take water from the plasma<br />not be affected at all<br />Shriver and die<br />
    10. 10. Problem<br />08<br />Which one of the four parts mentioned below does not constitute of part of single uriniferous tubule?<br />Distal convoluted tubule<br />Collecting duct <br />Bowman’s capsule <br />Loop of Henley<br />
    11. 11. Problem<br />09<br />The pace setter in the heart is called<br />Sino-atrial node (SAN)<br />Atrio-ventricular node (AVN)<br />Purkinje fibers <br />Papillary muscle <br />
    12. 12. Problem<br />10<br />Which of the following does not have an open circulatory system?<br />Frog’s tadpole <br />Prawn <br />Chelifer<br />Cockroach <br />
    13. 13. Problem<br />11<br />In man and mammals, air passes from outside into the lungs through<br />Nasal cavity, larynx, pharynx, trachea, bronchi, alveoli<br />Nasal cavity, larynx, pharynx, trachea, bronchioles, alveoli<br />Nasal cavity, pharynx, larynx, trachea, bronchioles, bronchi, alveoli<br />Nasal cavity pharynx, larynx, trachea, bronchi, bronchioles, alveoli<br />
    14. 14. Problem<br />12<br />Which of the following is correct pairing of site of action and substrate of rennin?<br />Mouth-starch<br />Small intestine-protein<br />Stomach-casein<br />Stomach-fat<br />
    15. 15. Problem<br />13<br />What is true about cleavage in the fertilized egg in humans?<br />It starts while the egg is in fallopian tube <br />It starts when the egg reaches uterus<br />It is meroblastic<br />It is identical to the normal mitosis<br />
    16. 16. Problem<br />14<br />The heart sound ‘dup’ is produced when <br />Mitral valve is closed<br />Semi-lunar valves at the base of aorta get closed<br />Tricuspid valve is opened<br />Mitral valve is opened<br />
    17. 17. Problem<br />15<br />Two examples in which the nitrogenous wastes are excreted from body in the form of uric acid are <br />Birds and lizards <br />Frogs and cartilaginous fishes <br />Insects and bony fishes<br />Mammals and mollusk<br />
    18. 18. Problem<br />16<br />The respiratory center, which regulates respiration, is located in<br />Cerebellum <br />Medulla oblongata <br />Cerebral peduncle <br />The vague nerve<br />
    19. 19. Problem<br />17<br />Prolonged deficiency of nicotinic and causes<br />Pellagra<br />Xerophthalmia<br />Osteomalacia<br />Anaemia<br />
    20. 20. Problem<br />18<br />The extra embryonic membranes of the mammalian embryo are derived from<br />Trophoblast<br />Inner cell mass <br />Formative cells <br />Follicle cells<br />
    21. 21. Problem<br />19<br />In the 28 day human ovarian cycle, the ovulation takes place typically on <br />Day 14 of the cycle<br />Day 28 of the cycle<br />Day 1 of the cycle<br />Day 5 of the cycle<br />
    22. 22. Problem<br />20<br />The immediate cause of induction of ovulation in human female is the large plasma surge of <br />LH<br />FSH<br />Progesterone<br />Estrodiol<br />
    23. 23. Problem<br />21<br />The type of joint between the human skull bones is called<br />Cartilaginous joint<br />Hinge joint<br />Fibrous joint<br />Synovial joint<br />
    24. 24. Problem<br />22<br />Which of the following components is a part of the pectoral girdle?<br />Sternum<br />Acetabulum<br />Glenoid cavity<br />Ilium<br />
    25. 25. Problem<br />23<br />Which of the following is the function of enterogastrone?<br />It inhibits the secretion of gastric juice <br />It stimulates the secretion of digestive juices in the stomach<br />It stimulates the flow of pancreatic juice <br />It regulates the flow of bile<br />
    26. 26. Problem<br />24<br />An epithelial tissue which has thin flat cells, arranged edge to so as to appear like closely packed tiles, is found to be present at<br />Outer surface of ovary <br />Inner lining of fallopian tube<br />Inner lining of stomach<br />Inner lining of cheeks<br />
    27. 27. Problem<br />25<br />A plant bears fruit, has a column of vascular tissue and a tap root system. This plant is a <br />Angiosperm and dicot<br />Gymnosperm and dicot<br />Angiosperm and monocot<br />Gymnosperm and monocot <br />
    28. 28. Problem<br />26<br />Haploid plants can be obtained by culturing<br />Pollen grains<br />Root tips<br />Young leaves<br />Endosperm<br />
    29. 29. Problem<br />27<br />Besides giving out secretory vesicles, the golgi apparatus is also concerned with the formation of <br />Lysosomes<br />Plastids<br />Grana of chloroplasts<br />Cell plates after cell division in plants.<br />
    30. 30. Problem<br />28<br />Which one of the following changes involved is irrelevant, in the evolution of man?<br />Perfection of hand for tool making<br />Change of diet from hard nuts and hard roots to soft food<br />Loss of tail<br />Increase in the ability to communicate with others and develop community behavior <br />
    31. 31. Problem<br />29<br />Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters?<br />Lack of pigment in cave-dwelling animals <br />Melanization in peppered moth<br />Absence of limbs in snakes<br />Presence of webbed toes in aquatic birds.<br />
    32. 32. Problem<br />30<br />Coolum derived from blastocoels is known as<br />Pseudocoelom<br />Schizocoel<br />Haemocoel<br />Enterocoelom<br />
    33. 33. Problem<br />31<br />A common characteristic of al vertebrates without exception is<br />The division of body into head, neck, trunk and tail<br />Their body covered with an exoskeleton <br />The possession of two pairs of functional appendages <br />The presence of well-developed skull<br />
    34. 34. Problem<br />32<br />Tube feet are the characteristic structures of<br />Starfish<br />Jellyfish<br />Crayfish<br />Cuttlefish <br />
    35. 35. Problem<br />33<br />Among the following organisms point out a completely non-parasitic form<br />Tape worm <br />Mosquito<br />Sea anemone<br />Leech<br />
    36. 36. Problem<br />34<br />Which of the following is an example of platy helminthes?<br />Plasmodium<br />Schistosoma<br />Trypanosoma<br />Wuchereria<br />
    37. 37. Problem<br />35<br />Radial symmetry is, usually, exhibited in animals which<br />Are attached to the substratum<br />Have one opening of alimentary canal<br />Live in water<br />Have ciliary mode of feeding<br />
    38. 38. Problem<br />36<br /> One of the special characters of coelenterate only is the occurrence of<br />Polymorphism<br />Flame cells<br />Hermaphrodites<br />Nematocysts.<br />
    39. 39. Problem<br />37<br />There are special proteins that help to open up DNA double helix in front of the replication fork. These proteins are <br />DNA ligase<br />DNA toposiomerase I<br />DNA gyrase<br />DNA polymerase I<br />
    40. 40. Problem<br />38<br />There are special proteins that help to open up DNA double helix in front of the replication fork. These proteins are <br />DNA ligase<br />DNA toposiomerase I<br />DNA gyrase<br />DNA polymerase I<br />
    41. 41. Problem<br />39<br />Initiation codon in eukaryotes is<br />GAU<br />AGU<br />AUG<br />UAG.<br />
    42. 42. Problem<br />40<br />The earliest fossil form, in the phylogeny of horse, is<br />Equus<br />Mesohippus<br />Eohippus<br />Merychippus<br />
    43. 43. Problem<br />41<br />Which of the following is pair of homologous organs?<br />Plectoral fin of rohu and fore-limb of horse <br />Wings of grasshopper and wings of crow <br />Lungs of rabbit and gills of rohu<br />Wings of bat and wings of butterfly<br />
    44. 44. Problem<br />42<br />Plants, but not animals, can convert fatty acids to sugars by a series of reactions called <br />Photosynthesis<br />Kreb’s cycle<br />Glycolysis<br />Glyoxylate cycle.<br />
    45. 45. Problem<br />43<br />The inner membrane of the mitochondria is, usually, highly convoluted forming a series of in foldings known as <br />Tylakoids<br />Lamellae<br />Cristae<br />Grana<br />
    46. 46. Problem<br />44<br />In a somatic cell cycle, DNA synthesis takes place in<br />G1 phase<br />Prophase of mitosis <br />S-phase<br />G2 phase. <br />
    47. 47. Problem<br />45<br />Which one of the following organelles is located near the nucleus and contains a collection of flattened membrane bound cisternae?<br />Nucleolus<br />Mitochondrion<br />Centriole<br />Golgi apparatus. <br />
    48. 48. Problem<br />46<br />Centro mere is required for <br />Replication of DNA<br />Chromosome segregation<br />Pole ward movement of chromosomes <br />Cytoplasm cleavage.<br />
    49. 49. Problem<br />47<br />Which of the following represents the best stage to view the shape, size and number of chromosomes?<br />Prophase<br />Metaphase<br />Interphase<br />Telophase.<br />
    50. 50. Problem<br />48<br />The first phase in the breakdown of glucose, in animal cell, is<br />Fermenation<br />Kerbl’s cycle<br />Glycolysis<br />E.T.S<br />
    51. 51. Problem<br />49<br />In protein synthesis, the polymerization of amino acids involves three steps. Which one of the following is not involved in the polymerization of protein?<br />Termination <br />Initiation<br />Elongation <br />Transcription.<br />
    52. 52. Problem<br />50<br />In mitochondria, cristae act as sites for<br />Protein synthesis<br />Phosphorylation of flavoproteins<br />Breakdown of macromolecules<br />Oxidation – reduction reaction<br />
    53. 53. Problem<br />51<br />A red blood cell was kept in a solution for a few minutes, where is got burst. The solution taken was <br />Hypotonic<br />Conce. Sugar solution <br />Isotonic<br />Hypertonic<br />
    54. 54. Problem<br />52<br />Which of the following organelles contain enzymes that have digestive action?<br />Ribosomes<br />Polysomes<br />Plastids<br />Lysosomes.<br />
    55. 55. Problem<br />53<br />The four elements that make up 99% of all elements found in a living system are <br />C, H, O and P<br />C, N, O and P<br />H, O, C and N<br />C, H, O and S<br />
    56. 56. Problem<br />54<br />When yeast ferments glucose, the products obtained are<br />Ethanol and CO2 <br />Methanol and CO2<br />Ethanol and water<br />Water and CO2<br />
    57. 57. Problem<br />55<br />Which of the following organelles is related with genetic engineering?<br />Mitochondria<br />Plasmids<br />Golgi bodies<br />Lysosomes<br />
    58. 58. Problem<br />56<br />Organisms, which fix atmospheric nitrogen in soil, fall under the category of<br />Bacteria <br />Green algae<br />Soil fungi<br /> mosses<br />
    59. 59. Problem<br />57<br />The colour blindness is more likely to occur in males than in females because<br />The Y-chromosome of males have the genes for distinguishing colors<br />Genes for characters are located on the sex-chromosomes<br />The trait is dominant in males and recessive in females<br />None of these.<br />
    60. 60. Problem<br />58<br />A cell-coded protein that is formed in response to infection, with most animal viruses, is called<br />Histone<br />Antibody<br />Mterferon<br />Antigen<br />
    61. 61. Problem<br />59<br />Which of the following statements is correct with reference to a test tube baby?<br />Fertilization of the egg is effected outside the body; the fertilized egg then placed in the womb of the mother where the gestation is completed<br />Fertilization of the egg is effected in the female genital tract. It is then taken out and grown in a large test tube<br />A prematurely born baby is reared in an incubator<br />Fertilization of the egg and growth of the embryo are affected in a large test tube.<br />
    62. 62. Problem<br />60<br />Albinism is a congenital disorder resulting from the lack of the enzyme<br />Tyrosinase<br />Xanthine oxidase<br />Catalase<br />Fructokinase<br />
    63. 63. Problem<br />61<br />A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called<br />Osteosclerosis<br />Hashimoto”soxidase<br />Bright”s disease <br />Minimata disease.<br />
    64. 64. Problem<br />62<br />Which one of the following is correctly matches a sexually transmitted disease with its pathogen?<br />Syphilis-Treponema pallidium<br />Gobirrhoea-Entamoeba histolytica <br />Urethritis-Bacillus anthracis<br />Softsore-Bacillus brevis.<br />
    65. 65. Problem<br />63<br />Silk is produced by <br />Adult moth<br />Cocoon<br />Larva <br />Both (a) and (c).<br />
    66. 66. Problem<br />64<br />Which among the following is the real product of the honey bee?<br />Honey<br />Propolis<br />Pollen<br />Bee wax<br />
    67. 67. Problem<br />65<br />The main reason why antibodies could not solve all the problems of bacteria mediated disease is<br />Decreased efficiency of the immune system<br />Insensitivity of the individual following prolonged exposure to antibiotics<br />Development of mutant strains resistant to antibodies<br />Inactivation of antibiotics by bacterial enzymes<br />
    68. 68. Problem<br />66<br />Tobacco mosaic virus (TMV) genes are<br />Single stranded RNA <br />Double stranded DNA <br />Proteinaceous<br />Double stranded RNA.<br />
    69. 69. Problem<br />67<br />Biological control of agricultural pests, unlike chemical control, is<br />Self perpetuating <br />Polluting<br />Very expensive<br />Toxic.<br />
    70. 70. Problem<br />68<br />Calcium deficiency in the body occurs in the absence of<br />Vitamin C<br />Vitamin D<br />Vitamin B<br />Vitamin E<br />
    71. 71. Problem<br />69<br />In cheese manufacture, the microorganisms are important for<br />The ripening only <br />The souring of milk only<br />The development of resistance to spoilage only <br />Both the souring and the ripening processes.<br />
    72. 72. Problem<br />70<br />Lac operon’ in E. coli, is induced by<br />‘I’ gene<br />promoter gene<br /> -galactosidase<br />Lactose.<br />
    73. 73. Problem<br />71<br />Transduction in bacteria is mediated by<br />Plasmid vectors <br />Phage vectors<br />Cosmos <br />F-factors.<br />
    74. 74. Problem<br />72<br />Which one of the following statements is correct?<br />Legumes fix nitrogen only through the specialized bacteria that live in their roots <br />Legumes fix nitrogen independently of the specialized bacteria that live in their roots <br />Legumes fix nitrogen only through specialized bacteria that live in their leaves<br />Legumes are incapable of fixing nitrogen.<br />
    75. 75. Problem<br />73<br />Which of the following necleotide sequences contains 4 pyrimidine bases?<br />GATCAATGC<br />GCUAGACAA<br />UAGCGGUAA<br />Both (b) and (c).<br />
    76. 76. Problem<br />74<br />A child’s blood group is ‘O’. The parent’s blood groups cannot be<br />A and B <br />A and A<br />AB and O<br />B and O.<br />
    77. 77. Problem<br />75<br />Which statement best explains the evolutionary advantage of meiosis?<br />Meiosis is necessary for sexual reproduction <br />Genetic recombination are possible from generation to generation<br />Meiosis alternates with mitosis for generation to generation<br />The same genetic system is passed on from generation to generation.<br />
    78. 78. Problem<br />76<br />A metastatic cancerous tumor is termed’ sarcoma’ if the disorder is in<br />Fibroblasts<br />Circulatory system<br />Immune system<br />Epithelial cells.<br />
    79. 79. Problem<br />77<br />Normally DNA molecule has A-T, G-C pairing. However, these owing to rearrangements called <br />Frame-shift mutation <br />Tautomerisational mutation <br />Analog substitution <br />Point mutation.<br />
    80. 80. Problem<br />78<br />The genes, which remain confined to differential region of Y-chromosome, are <br />Autosomal genes <br />Holandric genes<br />Completely sex-linked genes<br />Mutant genes.<br />
    81. 81. Problem<br />79<br />The process of mating of individuals, which are more closely related than the average of the population to which they belong, is called <br />Heterosis<br />Self breeding<br />Inbreeding <br />Hybridization.<br />
    82. 82. Problem<br />80<br />The nuclease enzyme, which begins its attack from free and of a polynucleotide, is <br />Polymerase<br />Endonuclease<br />Exonuclease<br />Kinase.<br />
    83. 83. Problem<br />81<br />The ultimate respiratory substrate, yielding maximum number of ATP molecules, is <br />Glycogen<br />Ketogenic amino acid<br />Glucose<br />Amylose.<br />
    84. 84. Problem<br />82<br />Posions like cyanide inhibit Na+ efflux and K+ influx during cellular transport. This inhibitory effect is reversed by an injection of ATP. This demonstrates that <br />ATP is the carrier protein in the transport system<br />Energy for Na+-K+ exchange pump comes from ATP<br />ATP is hydrolyzed by ATPase to release energy <br />Na+-K+ exchange pump operates in the cell.<br />
    85. 85. Problem<br />83<br />During light reaction of photosynthesis, which of the following phenomenon is observed during cyclic phosphorylation as well as non-cyclic phosphorylation?<br />Release of O2<br />Formation of ATP<br />Formation NADPH<br />Involvement of PSI and PSII pigment systems.<br />
    86. 86. Problem<br />84<br />As a tree grows older, which of the following increases more rapidly in thickness?<br />Heart wood<br />Sap wood<br />Phloem<br />Cortex.<br />
    87. 87. Problem<br />85<br />Caesarian strip occurs in a<br />Endodermis<br />Exodermises<br />Epicycle<br />Epidermis.<br />
    88. 88. Problem<br />86<br />The 1992 Nobel Prize for medicine was awarded to Edmond H. Fischer and Edwin Jokers for their work concerning<br />Reversible protein phosphorylation as a biological regulation mechanism<br />Isolation of the gene for a human disease<br />Human genome project<br />Drug designing involving inhibition of DNA synthesis of the pathogen.<br />
    89. 89. Problem<br />87<br />Precambrian is situated just behind apical meristem. Procambium gives rise to <br />Primary vascular bundle<br />Vascular cambium<br />Cork cambium<br />Both (a) and (b).<br />
    90. 90. Problem<br />88<br />Which of the following pigments acts as a reaction centre durin photosynthesis?<br />Carotene<br />Phytochrome<br />P700<br />Cytochrome.<br />
    91. 91. Problem<br />89<br />Embryo sac represents<br />Megaspore<br />Mega gametophyte<br />Megasporophyll<br />Megagamete.<br />
    92. 92. Problem<br />90<br />When pollen of a flower transferred to the stigma of another flower of the same plant, the pollination is referred to as<br />Autogamy<br />Geitonogamy<br />Xenogamy<br />Allogamy.<br />
    93. 93. Problem<br />91<br />If the growing plant is decapitated, then<br />Its growth stops<br />Leaves become yellow and fall down <br />Axillary buds are inactivated<br />Axillary buds are activated.<br />
    94. 94. Problem<br />92<br />The movement of auxin is largely<br />Centripetal <br />Basipetal<br />Acropetal<br />Both ‘a’ and ‘c’<br />
    95. 95. Problem<br />93<br />Rickettsiae form a group under<br />Viruses<br />Bacteria<br />Fungi<br />A category between viruses and bacteria.<br />
    96. 96. Problem<br />94<br />Hypanthodium is a specialized type of<br />Fruit <br />Inflorescence <br />Thalamus<br />Ovary.<br />
    97. 97. Problem<br />95<br />In bryophytes<br />Both generations are independent <br />Gametophytes are dependent upon saprophytes<br />Saprophytes complete their life cycle<br />Saprophytes are dependent upon gametophytes.<br />
    98. 98. Problem<br />96<br />In Pinus, the wing of the seed develops from<br />Ovuliferous scale<br />Integument<br />Nucellus<br />Bract.<br />
    99. 99. Problem<br />97<br />In chlorophyceae, the mode of sexual reproduction is<br />Isogamy<br />Anisogamy<br />Oogamy<br />All of these.<br />
    100. 100. Problem<br />98<br />The protests have<br />Only free nucleic and aggregates<br />Membrane bound nucleo proteins lying embedded in the cytoplasm<br />Gene containing nucleoproteins condensed together in loose mass<br />Nucleoprotein in direct contact with the rest of the cell substance. <br />
    101. 101. Problem<br />99<br />Mycorrhiza exhibits the phenomenon of<br />Parasitism <br />Symbiosis<br />Antagonism<br />Endemism.<br />
    102. 102. Problem<br />100<br />Many blue-green algae occur in thermal springs (hot water springs). The temperature tolerance of these algae have been attributed to their <br />Mitochondrial structure<br />Importance of homopolar bonds in their proteins<br />Cell wall structure <br />Modem cell organization.<br />
    103. 103. For solution visit www.vasista.net<br />

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