MDCAT Past Paper

Q.3 An electric charge in uniform motion produces:
A) An electric field. C) Both magnetic and electric fields.
B) A magnetic field. D) Neither magnetic nor electric fields.

Q.4 What is emitted by a hot metal filament in a cathode ray tube?
A) X-ray. C) Electron.
B) Proton. D) Photon.

Q.5 If the mass of the bob of a pendulum is doubled its time period is:
A) Halved. C) Unchanged.
B) Doubled. D) Increases four times.

Q.6 The centre of Newton rings is dark due to:
A) Polarization. C) Constructive interference.
B) Destructive interference. D) Reflection.

Page 2 of 16
Q.7 Which one is most stable element on the basis of binding energy?
A) Sn. C) Kr.
B) Ba. D) Fe.

Q.8 Resistance in RC circuit of time constant 2 seconds is 1000 Ohms. What is value of C in the circuit?
A) 2 μ farad. C) 200 μ farad.
B) 20 μ farad. D) 2000 μ farad

Q.9 The Lenz’s law refers to induced
A) emf. C) Shear.
B) Resistance. D) Currents.

Q.10 In which of the following, output is similar to NAND gate if input A=0 and input B=1.
A) NOR. C) XOR.
B) XNOR. D) Both B and C.

Q.11 For atomic hydrogen spectrum, which of the following series lies in visible region of electromagnetic spectrum?
A) Lyman series. C) Balmer series.
B) Paschen series. D) Bohr series.

Q.12 are the particles that experience strong nuclear force.
A) Electrons. C) Neutrinos.
B) Muons. D) Neutrons.

Q.13 The vertical velocity of ball thrown upward with time.
A) Decreases linearly. C) Doubles.
B) Remains constant. D) Decreases parabolically.

Q.14 The force required to bend the normally straight path of a particle into a circular path is called
force.
A) Traveling. C) Centrifugal.
B) Bending. D) Centripetal.

Q.15 A disc at rest without slipping, rolls down a hill of height (3 x 9.8) m. What is its speed in m/sec when it reaches at the bottom?
A) 11.4. C) 22.8.
B) 19.6. D) 9.8.

Q.16 Tuning of the radio is the best example of electrical
A) Resonance. C) Current.
B) Resistance. D) None of these.

Q.17 A standing wave pattern is formed when the length of string is an integral multiple of
wavelength.
A) Triple. C) Half.
B) Full. D) Double.

Q.18 Which of the following lights travels the fastest in optical fibres?
A) Visible light. C) Ultra-violet.
B) Invisible infra-red. D) Ordinary light.

Q.19 The algebraic sum of potential changes in a closed circuit is zero is Kirchhoff’s rule.
A) First. C) Third.
B) Second. D) None of these.

Q.20 In LED when an electron combines with a _ during forward bias conduction, a photon of visible light is emitted.
A) High voltage. C) Hole.
B) Photon. D) Positron.

Page 3 of 16
Q.21 For photons of energy greater than 1.02 MeV the probability of pair production occurrence
as the energy increases.
A) Increase. C) Reduces to half.
B) Completely diminishes. D) Remains unchanged.

Q.22 The neutron is assumed to be made of
A) One up quark and two down quarks. C) Two up quarks and one down quark.
B) Two up quarks and two down quarks. D) One up quark and one down quark.

Q.23 An missile is called a ballistic missile.
A) Un-powered and guided. C) Powered and guided.
B) Un-guided and powered. D) Un-powered and un-guided.

Q.24 Two cylinders of equal mass are made from same material. The one with the larger diameter accelerates _ the other under the action of same torque.
A) Faster than. C) Equal to.
B) Slower than. D) None of these.

Q.25 The angular frequency of simple pendulum is directly proportional to
A) l. C) v l.
B) 1/l. D) v1/l.

Q.26 Two waves of slightly different frequencies and traveling in same direction produce
A) Interference. C) Stationary waves.
B) Polarization. D) Beats.

A) Is reduced. C) Remains same.
B) Is increased. D) None of these.

Q.33 Force in terms of base units is expressed as
A) kg ms-2. C) kg m2s-3.
B) kg m2s-2. D) None of these.

Q.34 100 joules work has been done by an agency in 10 seconds. What is power of agency?
A) 1000 watt. C) 10 watt.
B) 100. D) 0.10 watt.

Q.35 The acceleration is proportional to the displacement and is directed towards mean position in
motion.
A) Gravity. C) Uniform.
B) Simple harmonic. D) Projectile.

Page 4 of 16
Q.36 In gases, the speed of sound is inversely proportional to of the density when other factors are same.
A) Square root. C) Third power.
B) Square. D) Third root.

Q.37 A watch maker uses to repair the watches.
A) Telescope. C) Convex lens.
B) Convex mirror. D) Concave lens.

Q.38 A 2m long pipe is open at both ends. What is its harmonic frequency?
A) 42.5 Hz. C) 220 Hz.
B) 85 Hz. D) None of these.

Q.39 A wire has resistance 100 Ohm at 0 oC and 200 Ohm at 100 oC. What is its temperature coefficient in K-1?
A) -0.01. C) 0.01.
B) -1/273. D) 1/273.

Q.40 The net magnetic field created by the electrons within an atom is due to the field created by their motion.
A) Orbital. C) Orbital & spin.
B) Spin. D) Orbital x spin.

Q.41 At high temperature, the proportion of wavelength radiation increase.

Q.47 Transverse waves cannot be setup in
A) Metals. C) Fluids.
B) Solids. D) Soil.

Q.48 The ratio of the is called magnification.
A) Image size to object size. C) Eyepiece size to object size.
B) Object size to image size. D) None of these

Q.49 Which of the following has the highest resistivity?
A) Germanium. C) Copper.
B) Silver. D) Platinum.

Q.50 An n-type semi-conductor is made by doping silicon crystal with
A) Indium. C) Arsenic.
B) Aluminium. D) Both B and C.

Page 5 of 16
Q.51 Objects cannot be accelerated to the speed of light in free space is consequence of
A) Mass variation. C) Inertia forces.
B) Energy-mass relationship. D) All of these.

Q.52 A certain radioactive mass decays from 64 gm to 2 gm in 20 days. What is its half-life?
A) 5 days. C) 10 days.
B) 4 days. D) 6 days.

Q.53 If inductance is denoted by L and resistance by R, which of the following is true for a choke?
A) R is large, L is very small. C) Both R and L are large.
B) R is very small, L is large. D) Both R and L are very small.

Q.54 A force 2i + j has moved its point of application from (2,3) to (6,5). What is work done?
A) -10. C) -18.
B) +10. D) +18.

Q.55 The escape velocity corresponds to energy gained by body, which carries it to an infinite distance from the surface of earth.
A) Total. C) Initial kinetic.
B) Potential. D) None of these.

Q.56 The drag force decreases as the speed of an object moving through fluid _
A) Increases. C) Remains constant.
B) Decreases. D) Both B and C.

A) Ionic. C) Coordinate covalent.
B) Covalent. D) All of these.

Q.62 When CuSO4 is electrolyzed in aqueous solution using copper electrodes, then the substance which deposits at the cathode is:
A) Copper metal. C) Hydrogen.
B) Copper ions. D) Oxygen.

Q.63 Aldehydes can be synthesized by the oxidation of
A) Primary alcohols. C) Organic acids.
B) Secondary alcohols. D) Inorganic acids.

Q.64 The products of the fermentation of a sugar are ethanol and
A) Water. C) Carbon dioxide.
B) Oxygen. D) Sulfur dioxide.

Page 6 of 16
Q.65 serve as carriers of heredity from one generation to the other.
A) Lipids. C) Formaldehydes.
B) Caseins. D) Nucleoproteins.

Q.66 extraction is controlled by partition law.
A) Iodine. C) Solvent.
B) Benzoic acid. D) Stationery.

Q.67 The process of effusion is best understood by law.
A) Graham’s. C) Boyle’s.
B) Charles’s. D) None of these.

Q.68 has dipole moment.
A) CO. C) Benzene.
B) CO2. D) All of these.

Q.69 is used as catalyst in Haber’s process for NH3 gas manufacture.
A) Iron. C) Copper.
B) Carbon. D) Silver.

Q.70 In many of its properties is quite different from the other alkali metals.
A) Li. C) Na.
B) Be. D) K.

Q.71 Which element forms long chains alternating with oxygen?

Q.77 London forces are very significant in _
A) Sulphur. C) Argon.
B) Phosphorous. D) Sugar.

Q.78 Which of the following formation is endothermic reaction?
A) 2H2(g) + O2(g) 2H2O(l). C) N2(g) + O2(g) N2O2(g).
B) C(s) + O2(g) CO2(g). D) None of these.

Q.79 Name the partially miscible liquids from the following?
A) Alcohol-ether. C) Benzene-water.
B) Nicotine-water. D) Both A and B.

Q.80 AlI3 (Aluminium Iodide) is electrically a
A) Conductor. C) Semiconductor.
B) Non-conductor. D) None of these.

Page 7 of 16

Q.81 The elements of IIIA to VIIIA subgroups except He are known as
elements.
A) q. C) p.
B) s. D) None of these.

Q.82 Concentrated nitric acid gives when it reacts with tin.
A) Nitric oxide. C) Ammonium nitrite.
B) Meta stannic acid. D) None of these.

Q.83 Sulphuric acid is used to manufacture
A) HCl and HNO3. C) Both A and B.
B) H3PO4. D) Both HCl and 2COOH.

Q.84 Alkanes containing carbon atoms are waxy solids.
A) up to 4. C) 18 or more.
B) 5 to 17. D) None of these.

Q.85 Which of the following is used to make chloral hydrate?
A) Acetaldehyde. C) None of these.
B) Formaldehyde. D) Both A and B.

block

Q.86 Ten moles of hydrogen are allowed to react with 6 moles of oxygen. How much water will be obtained from reaction on complete consumption of one gas?
A) 10 moles. C) 6 moles.
B) 8 moles. D) 4 moles.

Q.92 With increase in number of unpaired electrons, paramagnetism:
A) Increases. C) Remains constant.
B) Decreases. D) Decreases then increases.

Q.93 Which metal is commonly used to remove air bubbles from molten metals?
A) Aluminium. C) Sodium.
B) Copper. D) Calcium.

Q.94 Which of the following bonds has minimum bond energy?
A) C – F. C) C – I.
B) C – Cl. D) C – Br.

Q.95 Which of the following does not react with water?
A) Li. C) Mg
B) Na. D) Be.

Page 8 of 16
Q.96 Al2O3(SiO2).2H2O is called
A) Clay. C) Asbestos.
B) Talc. D) None of these.

Q.97 CaO forms fertilize slag by reacting with
A) P2O5. C) Silica.
B) Fe2O3. D) FO.

Q.98 is colorless volatile liquid at room temperature.
A) HCl. C) HI.
B) HF. D) HBr.

Q.99 Hydrogen passed through phenol at 150 ºC in the presence of
cyclohexanol.
A) Tin. C) Iron.
B) Nickel. D) Sodium.

Q.100 Ethanol-water is mixture.
A) Azeotropic. C) Benedict’s.
B) Ideal. D) Aliphatic.

Q.101 The mobile phase in paper chromatography is usually
A) An organic liquid. C) Water.
B) Sulphuric acid. D) Silver nitrate.

catalyst gives

Q.107 In which of the following carbon is double bonded with itself?
A) Alkane. C) Alkene.
B) Ether. D) Alkyne.

Q.108 In this process, higher hydrocarbons can be cracked at lower temperature and lower pressure.
A) Thermal cracking. C) Steam cracking.
B) Catalytic cracking. D) Reforming.

Q.109 Acetic acid is called _ acid.
A) Methanoic. C) Ethanoic.
B) Propanoic. D) Butanoic.

Q.110 Na may be denoted by _ electron configuration notation
A) 1s2 2s1. C) [Ne] 3s1.
B) [Ar] 4s1. D) None of these.

Page 9 of 16
Q.111 Which is the best drying agent in desiccators?
A) KOH. C) CaCl2.
B) Gypsum. D) Silica sand.

Q.112 100 m3 of a gas at 3 atm pressure and 27 oC is transferred to a chamber of 300 m3 volume maintained at a temperature of 327 oC. What will be the pressure in chamber?
A) 6 atm. C) 2 atm.
B) 4 atm. D) 1 atm.

Q.113 The crystals of are ionic solids.
A) Sugar. C) Diamond.
B) Iron. D) NaCl.

Q.114 Which material possesses the highest pH?
A) Soft drinks. C) Milk of magnesia.
B) Bananas. D) Sea water.

Q.115 The electron present in a particular orbit energy.
A) Releases. C) Absorbs.
B) Does not radiate. D) None of these.

Q.116 Al2F2SiO4 is named as
A) Gibbsite. C) Bauxite.
B) Emerald. D) Cryolite.

Q.117 Name the oxide in which N has the highest oxidation number.
A) Nitrous oxide. C) Nitrogen peroxide.
B) Nitric oxide. D) Nitrous anhydride.

Q.118 Sulphur has oxidation state of
A) ± 2. C) None of these.
B) + 4 and +6. D) Both A and B.

Q.119 CH3-O-CH3 is example of isomerism.
A) Metamerism. C) Chain.
B) Functional group. D) Position.

Q.120 are product of reaction of an alcohol and aromatic bi-functional acids.
A) Acrylic resins. C) PVCs.
B) Polyester resins. D) Polyamide resins.

ENGLISH
Q.121 He was of all valuable possessions.
A) Robbed. C) Pinched.
B) Stolen. D) Established.

Q.122 The presence of armed guards us from doing anything disruptive.
A) Defeated. C) Irritated.
B) Excited. D) Prevented.

Q.123 Our flight was _ from Lahore to Islamabad airport.
A) Diverted. C) Deflected.
B) Reflected. D) Shifted.

Q.124 I am forward to our picnic scheduled in next month.
A) Looking. C) Seeing.
B) Planning. D) Going.

Page 10 of 16
SPOT THE ERROR: In the following sentences, some segments of each sentence are underlined. Your task is to identify that underlined segment of the sentence, which contains the mistake that needs to be corrected. Fill the Circle corresponding to that letter under the segment in the MCQ Response From.

Q.125 They did not guess how closely he had kept in touch with across the road.
A) B) C) D)

Q.126 He proved that if only germs were excluded of wounds, inflammation was averted.
A) B) C) D)

Q.127 The man felt his hair flutter and the tissues of his body drew tight as if he were standing at the centre
A) B) C)
of a vacuum.
D)

Q.128 He came to the hurdles that he remember, over which once he had so easy a victory.
A) B) C) D)

Q.129 What is meant by birth-rate and death-rate and how do they effect the population?
A) B) C) D)

Q.130 She had left him with a calmness and a poise that accord well with his own inward emotions.
A) B) C) D)

In each of the following question, four alternative sentences are given. Choose the CORRECT one and fill the Circle corresponding to that letter in the MCQ Response Form.

Q.131
A) He lacked both the training and the equipment needed in the job.
B) He lacked both the training and the equipment needed by the job.
C) He lacked both the training and the equipment needed on the job.
D) He lacked both the training and the equipment needed for the job.

Q.132
A) They tried to pacify him for kindness and affection. C) They tried to pacify him by kindness and affection.
B) They tried to pacify him in kindness and affection. D) They tried to pacify him with kindness and affection.

Q.133
A) Then he sat down in corner and remained queit. C) Then he sat down in corner and remain quiet.
B) Then he sat down in corner and remained quite. D) Then he sat down in corner and remained quiet.

Q.134
A) He was drenched with the hotness of his fear. C) He was drenched by the hotness of his fear.
B) He was drenched in the hotness of his fear. D) He was drenched off the hotness of his fear.

Q.135
A) Why did you disagree with me? C) Why did you disagree on me?
B) Why did you disagree to me? D) Why did you disagree by me?

Q.136
A) Do not stuff your head by things you do not understand.
B) Do not stuff your head with things you do not understand.
C) Do not stuff your head for things you do not understand.
D) Do not stuff your head in things you do not understand.
Q.137
A) A day later he reached his first glimpse of Lahore.
B) A day later he took his first glimpse of Lahore.
C) A day later he found his first glimpse of Lahore.
D) A day later he caught his first glimpse of Lahore.

Page 11 of 16
Q.138
A) This will have a bad impact to the economy. C) This will have a bad impact at the economy.
B) This will have a bad impact on the economy. D) This will have a bad impact over the economy.

Q.139
A) It would save him from dying of thirst. C) It would save him from dying with thirst.
B) It would save him from dying from thirst. D) It would save him from dying by thirst.
Q.140
A) All this flashed by his mind in an instant of protest.
B) All this flashed on his mind in an instant of protest.
C) All this flashed through his mind in an instant of protest.
D) All this flashed by off mind in an instant of protest.

In each of the following question, four alternative meanings of a word are given. You have to select the NEAREST CORRECT MEANING of the given word and fill the appropriate Circle on the MCQ Response Form.

Q.141 VEXING
A) Annoying. C) Viable.
B) Aggressive. D) Waxy.

Q.142 VAGUE
A) Respectful. C) Warlock.
B) Uncertain. D) Snow white.

A) Lazily. C) Ideally.
B) Indecently. D) Gaily.

Q.149 PERISH
A) Furious. C) Secret.
B) Come to death. D) Frustrated.

Q.150 DOZE
A) Dogged. C) Sleep.
B) Diet. D) Medicine to be taken.

BIOLOGY
Q.151 Which of the following receptors produce sensation of pain?
A) Mechanoreceptor. C) Chemoreceptors.
B) Nociceptors. D) Thermoreceptors.

Page 12 of 16
Q.152 When your finger accidentally gets caught in a door, the pain message is sent to your brain through .
A) Homeostasis. C) Caffeine.
B) Sensory receptors. D) The medulla.

Q.153 Neck has type of joint.
A) Ball and socket. C) Hinge.
B) Pivot. D) Fibrous.

Q.154 End product of hemoglobin break down is:
A) Creatinine. C) Hypoxanthin.
B) Bilirubin. D) Xanthin.

Q.155 In what direction, can a DNA polymerase work when catalyzing the addition of nucleotide monomers to build a strand of DNA?
A) From the 5′ toward the 3′ end of the new strand being assembled.
B) From the replication centers in two directions called replication forks.
C) From the 3′ to the 5′ end of the strand being assembled.
D) In both directions if DNA ligase is present.

Q.156 Which bond is the potential source of chemical energy for cellular activities?
A) C-N. C) C-H.
B) C-O. D) H-O.

Q.157 Sharks and rays are included in class:
A) Cyclostomata. C) Osteichthyes.
B) Chondrichthyes. D) Tetrapoda.

Q.158 In what stage of aerobic respiration are 2-carbon molecules oxidized completely to carbon dioxide?
A) Glycolysis. C) Krebs cycle.
B) ETC. D) Calvin cycle.

Q.159 Which of the following does not have specialized respiratory organs?
A) Hydra. C) Cockroach.
B) Birds. D) Both A and B.

Q.160 Humming birds belong to the category
A) Heterotherms. C) Ectotherms.
B) Endotherms. D) None of these.

Q.161 Syphilis is caused by
A) Neisseria gonorrhoeae. C) Treponema pallidum.
B) Cats worm. D) Herpes simplex.

Q.162 In moths’ male is
A) Heterogametic. C) Homogametic.
B) Dieogametic. D) Both B and C.

Q.163 When carbon dioxide pressure increases the capacity of haemoglobin to hold oxygen:
A) Increases many folds. C) Remains constant.
B) Decreases. D) Is doubled.

Q.164 The soluble part of the cytoplasm is termed as
A) Cisternae. C) Endocytosis.
B) Cytosol. D) Both A and B.

Q.165 Name the enveloped RNA virus that causes infusion hepatitis.
A) HBV. C) HCV.
B) HAV. D) None of these.

Q.166 In general, asexual reproduction is common in
A) Humans. C) Deuteromycota.
B) Basidiomycota. D) Basidiospores.

Page 13 of 16
Q.167 Name the vertebrates which are without jaws.
A) Osteichthyes. C) Chondrichthyes.
B) Cyclostomata. D) None of these.

Q.168 The total inside capacity of lungs of adult human beings when fully inflated is
A) 5 ml. C) 500 ml.
B) 50 ml. D) 5000 ml.

Q.169 Which of the following belong to collenchyma cells?
A) Fibers. C) Sclereides.
B) Vessels. D) None of these.

Q.170 Which of the following promotes both leaf and fruit growths?
A) Auxins. C) Abscisic acid.
B) Gibberellins. D) Ethane.

Q.171 Name the external factor of growth in plants
A) Carbon dioxide. C) Hormones.
B) Water. D) Nutrition.

Q.172 The genes of blue opsin are present on
A) Autosome 9. C) Autosome 1.
B) Autosome 7. D) Autosome 3.

Q.173 The dew drops on tips of grass leaves is an example of

Q.179 Pick the paratonic movement from the following
A) Nastic. C) Growth.
B) Turgor. D) Tactic.

Q.180 It controls the several automatic functions like breathing, heart rate and blood pressure:
A) Midbrain. C) Medulla.
B) Pons. D) Cerebellum.

Q.181 Which of the following has 40 chromosomes?
A) Corn. C) Frog.
B) Sugarcane. D) Mouse.

Q.182 The cell suspension culture of produces quinine.
A) Soybean. C) Digitalis lanata.
B) Cinchona ledgeriana. D) Luceferin.

Page 14 of 16
Q.183 Which one of the following is most slender in structure?
A) Microtubules. C) Intermediate filaments.
B) Micro filaments. D) Both A and B.

Q.184 Name the human tissues that contain about 85% water.
A) Nerve cells. C) Brain cells.
B) Bone cells. D) None of these.

Q.185 Which of the following are colorless?
A) Chloroplasts. C) Leucoplasts.
B) Chromoplasts. D) None of these.

Q.186 Name the one involved in DNA replication.
A) Cysts. C) Ribosomes.
B) Mesosomes. D) Spores.

Q.187 Which of the following has rootless sporophytes?
A) Psilopsida. C) Lycopsida.
B) Tracheophyta. D) Sphenopsida.

Q.188 Chlorophylls absorb mainly _ wave length.
A) Yellow. C) Violet-blue.
B) Green. D) Indigo.

Q.189 did not have the adaptations to remove the flooding of their cells in fresh water.

Q.195 Herpes simplex is caused by _ virus.
A) Enveloped RNA. C) Glycogen.
B) RNA tumor. D) Both B and C.

Q.196 Name the cyanobacteria which are helpful in fixing atmospheric nitrogen.
A) Heterocysts. C) Akinetes.
B) Nostoc. D) Hormogonia.

Q.197 Name the class that contains seedless plants.
A) Angiospermae. C) Paraphsys.
B) Gemnospermae. D) Filicineae.

Q.198 Which form of anaerobic respiration occurs in muscle cell of humans and other animals during extreme physical activities?
A) Alcoholic fermentation. C) Glycolysis.
B) Lactic acid fermentation. D) Pyruvic acid oxidation.

Page 15 of 16

Q.199 How much water approximately is required to excrete 1 kg of ammonia nitrogen?
A) 500 ml. C) 300 litre.
B) 5 litre. D) 500 litre.

Q.200 Which disease causes immobility and fusion of vertebral joint?
A) Sciatica. C) Disc slip.
B) Spondylosis. D) Rickets.

Q.201 Which hormone continues to promote protein synthesis throughout the body even after the cease in growth?
A) TSH. C) ACTH.
B) ADH. D) STH.

Q.202 Position of a gene on the chromosome is called its
A) Phenotype. C) Junction.
B) Locus. D) Genotype.

Q.203 Pick the biotic component from the following.
A) Soil. C) Atmosphere.
B) Water. D) Animals.

Q.204 The two strands in DNA are coiled to each other.
A) Parallel. C) Both A, B.
B) Antiparallel. D) None of these.

A) Tetany. C) Muscle fatigue.
B) Cramp. D) Sciatica.

Q.211 It is known that red light flowering in the long day plants.
A) Synchronizes. C) Promotes.
B) Inhibits. D) Does not affect.

Q.212 The colour phenotype of the grain is the sum of individual effects of alleles.
A) Six. C) Four.
B) Five. D) Five or three.

Q.213 In zone the light is insufficient to support photosynthesis.
A) Desert. C) Littoral.
B) Profundal. D) All of these.

Page 16 of 16
Q.214 The optimum temperature for enzymes of human body is
A) 32 oF. C) 313 K.
B) 46 oC. D) 37 oC.

Q.215 Which of the following damages wooden ships?
A) Sepia. C) Teredo.
B) Limax. D) Ostrea.

Q.216 Which of the following may build coral reefs along with coral animals?
A) Myxomycota. C) Green algae.
B) Brown algae. D) Red algae.

Q.217 Which of the following do not have a body cavity?
A) Pseudocoelomata. C) Coelomata.
B) Acoelomata. D) None of these.

Q.218 Name the neurotic disorder characterized by bouts of over eating of fattening foods.
A) Bulimia nervosa. C) Anorexia nervosa.
B) Dyspepsia. D) Salmonella.

Q.219 Which one of these is an example of tubular excretory system called metanephridia?
A) Planaria. C) Cockroach.
B) Hydra. D) Earthworm.

Q.220 Name the human tissues that contain about 85% water