AIPMT Biology 1996

aipmt–Past papers BIOLOGY- UNSOLVED PAPER - 1996

SECTION – I (Total Marks : 50) Single Correct Answer Type 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

01 Problem The ornithine cycle removes two waste products from the blood in liver. These products are CO2 and ammonia Ammonia and uric acid CO2 and urea Ammonia and urea.

Problem 02 Antibodies are produced by Leucocytes Monocytes Lymphocytes Spleen.

Problem 03 When a muscle bends one part upon the other, it is called Abductor Regulator Extremor Flexor.

Problem 04 In C4 plants, CO2 fixation is done by Sclerenchyma Chlorenchyma and hypodermis Mesophyll cells Gurad cells.

Problem 05 Radio –tracer technique shows that DNA is in Multi-helix stage Single –helix stage double –helix stage None of these.

Problem 06 The formation of canal systems in sponges is due to Folding of inner walls Gastro-vascular system Reproduction Porous walls.

Problem 07 Lungs are enclosed in Peritoneum Perichondrium Pericardium Pleural membrane.

Problem 08 AIDS disease was first reported in USA France Russia Germany

Problem 09 When on molecule of ATP is disintegrated, what amount of energy is liberated? 8 kcal 38 kcal 7 kcal 4.5 kcal

Problem 10 Which of the following is common among mammals? They go no molting They have seven cervical vertebrae They are carnivores They have ventral nerve cord

Problem 11 The animals of cold countries have relatively shorter and poorly developed ears, eyes, hairs and other phenotypic characters. This is known by which law? Cope’s Law Dollo’s Law Allen’s Law Bergamann’s Law.

Problem 12 When two dominant independently assorting genes react with each other, they are called Collaborative genes Complementary genes Duplicate genes Supplementary genes.

Problem 13 The maximum formation of m-RNA occurs in Ribosome Nucleoplasm Cytoplasm Nucleolus.

Problem 14 What of the following constitutes natural silk? Nitrogen Acetyl Co-A Potassium Phosphorus.

Problem 15 At the end of glycolysis, six carbon compound ultimately changes into Ethyl alcohol Acetyl Co-A Pyruvic acid ATP.

Problem 16 Which purine base is found in RNA ? Thymine Uracil Cytosine Guanine.

Problem 17 A genetically diseased father (male ) marries with a normal female and and gives birth to 3 carrier girls and 5 normal sons. It may be which type of genetically disease? Sex-influenced disease Blood group inheritance disease Sex-linked disease Sex-recessive disease.

Problem 18 When 1500 ml air is in the lungs, it is called Residual volume Inspiratory reserve volume Vital capacity Tidal volume.

Problem 19 The interferon's are Antigen proteins Antiviral proteins Antibiotic proteins All of these

Problem 20 A person whose father is colour blind marries a lady whose mother is daughter of a colour blind man. Their children will be All sons colour blind Some sons normal and some colour blind All colour blind. All daughter normal

Problem 21 The modern idea about ageing is that our body slowly loses the power of defense against the invasion of germs and pathogens. This process starts by the disappearance of which organ? Pituitary gland Spleen Thymus gland Parathyroid gland.

Problem 22 How the transport of O2 and CO2 by blood happens? With the help of WBCs and blood serum With the help of platelets and corpuscles With the help of RBCs and blood plasma With the help of RBCs and WBCs

Problem 23 The nephridia in earthworm are analogous to Nematoblasts of Hydra Flame cells of planaria Gills of Prawn Trachea of insects.

Problem 24 Pneumatic bone is found in Shark Rana Pigeon Whale.

Problem 25 The test tube baby means Fertiliztion & development both in uterus Fertilization in vitor & then transplantation in uterus A baby grown in test tube Fertilized and developed embryo in test tube.

Problem 26 Coelom is found between the cavity of Body wall and ectoderm Ectoderm and endoderm Mesoderm and body wall (endoderm ) Mesoderm and ectoderm.

Problem 27 By which nervous system and of what type, the blood is supplied into visceral organs? Both SNS and PNS, involuntary ? Para-sympathetic nervous system , involuntary Sympathetic nervous system, involuntary Sympathetic nervous system, involuntary

Problem 28 When scientists make an animal superior by view of genotype, introducing some foreign genes in it, is called Immunization Genetic engineering Tissue culture Biotechnology

Problem 29 The first hormone artificially produced by culturing bacteria is Testosterone Adrenalin Insulin Thyroxin.

Problem 30 High cholesterol patients are advised to use Ghee, butter and oils Groundnut oil, margarine and vegetable oils Fatty oil and butter Cheese, dalda and ghee.

Problem 31 Which hormone stimulates the secretion of milk from female ? Oxytocin Progesterone LH Prolactin.

Problem 32 In which of the following disease, the man has an extra X-chromosome ? Turner’s syndrome Klinfelter’s syndrome Bleeder’s disease Down’s syndrome

Problem 33 What are the mostly diversed molecules in the cell ? Lipids Mineral salts Proteins Carbohydrates.

Problem 34 Pasteurization is a process, which means heating of drinks. It is carried out, at what temperature and for how much duration? 700C and 60 minutes 800C and 30 minutes 1200C and 60 minutes 60-700C and 30 minutes.

Problem 35 When an animal has both the characters of male and female, it is called Super female Super male Intersex Gynandromorph.

Problem 36 Which of the following changes for man in the course of evolution is probably useless ? Development of being erect Development of cranial capacity Loss of tail Development of opposable thumb

Problem 37 Which of the following is the direct ancestor of Homo sapiens? Australopithecus H .sapiens Neanderthals Homoerectus Ramapithecus.

Problem 38 Which of the following is the correct group of vestigial organs in man? Nictitating membrane, ear muscles, eyelids and coccyx Appendix, coccyx, ear muscles and elbow joint Wisdom tooth, coccyx, body hair and ear muscles Wisdom tooth, body hairs, nictitating membrane and vermiform appendix .

Problem 39 Which of the following statement is without exception for sponges? They all have calcareous spicules They have high regenerative power They are found only in marine water They are all radially symmetric

Problem 40 H.J.Muller had received Nobel Prize for His studies on Drosophila for genetic study Proving that the DNA is a genetic material Discovering the linkage of genes Discovering the induced mutations by X-rays .

Problem 41 Which of the following is the false statement about “antibiotics”? Some persons have allergy from antibiotics Antibiotics are capable of curing any disease This term was given by Waksman in 1942 Antibiotics is produced by microorganisms .

Problem 42 Passive immunity was discovered by Jonas E. Salk A Flemming Edward Jenner L. Pasteur.

Problem 43 Pellagra disease is caused by Niacin Tocopherol Riboflavin Folic acid

Problem 44 In which of the following groups all are polysaccharides? Sucrose, glucose and fructose Maltose, lactose and fructose Glycogen, sucrose and maltose Glycogen, cellulose and starch

Problem 45 Choose the correct enzyme-substrate pair Carbohydrates-lipase Maltase-lactose Rennin-caesin Protein-amylase.

Problem 46 Which of the following fish is introduced by India by foreigners? Mystussinghala Clariusbatrachus Labeorohita Pomphret.

Problem 47 Which of the following pair of diseases is caused by virus? Rabies, mumps Cholera, tuberculosis Typhoid, tetanus AIDS, syphilis

Problem 48 Identify the correctly matched pair Corbett park – Aves Runn of Kutch – Wild ass Gir forest – Rhino Kajiranga – Elephant

Problem 49 Which vertebrate organ receives only oxygenated blood? Spleen Liver Gill Lung.

Problem 50 Now a days cornea transplantation is very popular. The reason is that, it Can be easily obtained Does not link blood supply and immune system Is easy to preserve Is transplants very easily.

Problem 51 The true statement about ‘green – house effect’ is that it is Caused by combination of many gases Caused only by CO2 Caused by CO2, CFC, CH4 and NO2 gases None of these

Problem 52 BGA (blue green algae) are included in which of the following groups? Bryophytes Prokaryotes Protista Fungi.

Problem 53 Maximum absorption of light occurs in the region of 1000 – 1200 nm 1500 – 2000 nm 400 – 700 nm 700 – 900 nm.

54 Problem Which one of the following elements is almost non-essential for plants? Zn Na Ca Mo.

Problem . 55 The polygenic genes show Different karyotypes Different genotypes Different phenotypes None of these .

Problem 56 If there are 4 cells in anthers, what will be the number of pollen grains? 16 12 8 4.

Problem 57 A gymnosperm leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be 12 8 16 24.

Problem . 58 Cochineal insects have proved very useful for Cactus prevention Eicchornia prevention Weeds control Pathenium control.

Problem 59 When a natural predator ( living being) is applied on the other pathogen organism to control them. This process is called Artificial control Confusion technique Biological control Genetic engineering.

Problem 60 Which of the following products are obtained by anaerobic respiration from yeast? Bear and wine Alcohols CO2 All of these .

Problem 61 Colchicines is an inhibitory chemical, which Stops the functioning of centriole Prevents attaching of centromeres with rays Prevents the spindle formation in mitosis Prevents the formation of equatorial plane.

Problem 62 Identify the one, which causes mutation Cosmic rays Colchicines Crossing over X-rays.

Problem 63 Benthonic animals are those, which Are submerged in area Float on the sea surface Are deep dweller in sea Are floating (free) organisms .

Problem 64 Lamp brush chromosomes are seen in which typical stage? Mitotic metaphase Meiotic prophase Mitotic anaphase Mitotic prophase.

Problem 65 Which country has the greatest contribution for the hole formation in ozone layer? Russia Japan USA Germany

Problem 66 The term ‘Meiosis’ was given by A Fleming Farmer and Moore Johansen Knoll and Ruska.

Problem 67 Lysosomes are rich in Nucleic acids Hydrolytic enzymes Carbohydrates Hormones.

Problem 68 The role of double fertilization in angiosperms is to produce Cotyledons Endocarp Endosperm Hormones.

Problem 69 When paternal and maternal chromosomes change their materials with each other in cell division this event is called Bivalent-forming Dyad-forming Synapsis Crossing-over.

Problem 70 2, 4-D is an effective Rodenticide Wormicide Fungicide Weedicide.

Problem 71 In C4 plants, CO2 combines with Phosphoenalpyruvate Phoshoglyceraldeyhde Phosphoglyceric acid Ribulosediphosphate.

Problem 72 What is the genetic material in influenza virus? Double helical DNA RNA Single helix DNA None of these .

Problem 73 Which is a typical example of ‘feed back inhibition’? Cyanide and cytochrome reaction Sulpha drugs and folic acid synthesizer bacteria Allosteric inhibition of hexokinase by glucose 6-phosphate Reaction between succinicdehydrogenase and succinicaicd

Problem 74 Which type of DNA is found in bacteria? Circular free DNA Membrane bound DNA Straight DNA Helical DNA.

Problem 75 What are the sex organs provided in some bacteria? Sex pili Plasmid Circular DNA Gametes.

Problem 76 Mycorrhiza is correctly described as Parasitic association between roots and some fungi Symbiotic relationship between fungi and roots of some higher plants Symbiosis of algae and fungi Relation of ants with the stem of some trees

Problem 77 Which of the following serves as an terminal codon? UAG AGA AUG GCG.

Problem 78 Improvement of human race by controlled selective breeding between individual with desirable characteristics is called Inbreeding Euthenics Eugenics None of these .

Problem 79 The breeding place of Flamingo (Hansawar) in India is most likely Runn of Kutch Ghana Vihar Sambhar lake Chilka lake.

Problem 80 Which of the following is a ‘true fruit’? Banana Fig Apple Pear.

Problem 81 Which of the following statement about lichens is wrong? These grow very rapidly (2 cm per day) They show fungal and algal symbiotic relationships Some of its species are eaten by reindeers These are pollution indicators.

Problem 82 When water enters in roots due to diffusion, is termed as Osmosis Passive absorption Endocytosis Active absorption.

Problem 83 If we uncover half of the forest, covering of the earth, what crisis will be produced at most and at first? Some species will be extricated Population and ecological imbalance will rise up Energy crisis will occur Rest half forests will maintain this imbalance

Problem 84 The ‘niche’ of a species is meant for Habitat and specific functions of a species Specific place where an organism lives Specific species function & its competitive power None of these .

Problem 85 Tube feet are the characteristic structures of Starfish Jellyfish Crayfish Cuttlefish

Problem 86 The two great industrial tragedies namely, MIC and Chernobyl tragedies respectively occurred where and at which time? Bhopal 1984, Ukrain 1986 Bhopal 1986, Russia 1988 Bhopal 1984, Ukrain 1990 Bhopal 1984, Ukrain 1988.

Problem 87 Azotobacter and Bacillus polymyxa are the examples of Pathogenic bacteria Decomposers Symbiotic N2 fixer Non-symbiotic N2 fixer .

Problem 88 Elaters mechanism for spore dispersal is exhibited by Liverworts Marchantia Riccia Funaria.

Problem 89 Which of the following is an example of ‘living fossils’? Pinus Riccia Gnetum Ginkgo.

Problem 90 Coir is the commercial product of coconut’s Endocarp Endosperm Pericarp Mesocarp.

Problem 91 Which of the following is not true about ‘sclerieds’? These are groups of living cells These are found in nut shells, guava pulp, pear These are also called stone cells These are form of sclerenchyma with fibers.

Problem 92 Which of the following plant kingdom is called ‘amphibians’? Pteridophyta Thallophyta Tracheophyta Bryophyta.

Problem 93 Which typical stage is known for DNA replication? S-phase G2-phase Metaphase G1-phase.

Problem 94 The correct sequence for the manufacture of the gases on the primitive earth is NH3, nucleic acid, protein and carbohydrate Protein, carbohydrate, water and nucleic acid NH3, protein, carbohydrate and nucleic acid NH3, water, nucleic acid and protein .

Problem 95 Photorespiration is favored by High temperature and low O2 High humidity and temperature High O2 and low CO2 High CO2 and low O2.

Problem 96 The first domesticated animal by primitive man was Cat Cow Dog Horse.

Problem 97 The law of limiting factors’ was proposed by Liebig Hatch and Slack Blackman Armon.

Problem 98 The smallest plant family ‘Gymnosperms’ has how many species? 640 300 1000 900.

Problem 99 What will be the number of Calvin cycles to generate one molecule of hexose? 8 9 4 6.

Problem 100 The 10% energy transfer law of food chain was given by Lindemann Transley Stanley Weismann.

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AIPMT Biology 1996

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AIPMT Biology 1996

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