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Test Your Knowledge PLANT PHYSIOLOGY 1. Water potential and osmotic potential of pure water are: a) 100 & zero b) Zero & 100 c) 100 & 100 d) Zero & Zero S.K. TRIVEDI 14. C4 plants _________ cell organelles: a) One b) Two c) Three 2. Loss of water from specific nodes on the margin of leaf is called: a) Transpiration b) Bleeding c) Evaporation d) Guttation 3. Water moves in plants from: a) Less negative to more negative gradient b) During equal gradients c) More negative to Less negative gradient d) Zero gradient 4. Plants synthesize auxins using mineral/minerals: a) Cu b) Zn c) Both d) Mo d) Four 15. Photorespiration begins with: a) Glycine c) Phosphoglycolate b) Glycerate d) Phophoglycerate 16. EMP pathway is also called: a) Glycolysis c) Anaerobic respiration b) Photorespiration d) Krebs’ cycle 17. Citrates are also known as: a) Tricarboxylic Acid c) Aconitate b) Glycerates d) All of the above 18. TCA cycle was proposed by: a) Melvin Calvin c) Hatch & Slack b) Hans Kreb d) Von Neil 5. Boron helps in plant physiology in: a) Photosynthesis b) Activation of enzyme c) Sugar transport d) Co-factor of enzymes 19. The final acceptor of electron in ETS is: a) CO2 b) O2 c) H 2O 6. Death of tissues of leaf is called: a) Chlorosis b) Neurosis c) Die-back d) Vein cleaning 20. Proteins/fats are used up in metabolism through: a) EMP pathway b) ETS pathway c) Amphibiotic pathway d) None of the above 7. The first reaction of photosynthesis is: a) Excitation of electrons b) Photolysis c) Formation of ATP d) CO2 fixation 21. The overall ATP formed during respiration is: a) 36 ATP b) 40 ATP c) 88 ATP d) 2 ATP 8. Chemical that converts light energy to chemical energy is: a) Xanthophyll b) Chlorophyll a c) Chlorophyll b d) Chlorophyll c 22. Hormone responsible for plant senescence is: a) G A b) 1AA c) ABA d) Cytokine 9. Photo-oxidation reaction is: a) Photolysis c) Light SO2 induced breakdown 23. Coconut milk is a source of a) 1AA c) 2-4-d b) Photorespiration d) All of the above b) Cytokine d) Ethylene 24. Which is known as fruit ripening hormone? a) 1BA b) Ethylene c) ABA d) Cytokine 10. Calvin cycle is mainly: a) Oxidative Carboxylation b) Reductive Carboxylation c) Photophosphorylation d) Oxidative Phosphorylation 25. Which process promotes early flaring by low temperature treatment? a) Photoperiodic b) Photo-phosphorylation c) Oxidative Phosphorylation d) Vernalisation 11. The first stable product of C4 cycle is: a) 3PGA b) Malate c) Citrate d) 2-Phosphocitrate 12. RUBISCO catalyzes oxygenation during: a) Light reaction b) Photolysis c) Photorespiration d) Calvin cycle ANSWERS: 9. d 10. b 11. b 12. c 13. O2 evolved during photosynthesis is generated during: a) Oxidative phosphophorylation b) Oxidative carboxylation c) Photolysis d) Photorespiration 17. a 25. d 18. b 19. b 20. c SCIENCE REPORTER, JANUARY 2011 d) Citric acid 1. d 2. d 3. a 4. b 5. c 6. b 7. a 8. b 13. c 14. c 15. c 16. a 21. b 22. c 23.b 24. b Contributed by Dr S.K. Trivedi, HOD (Bio), Academic IIC Patna Central School, S. Vihar, New-Bye-Pass, Patna-800027 40 Test Your Knowledge AZIZ AHMED HASHMI PHYSICS 12. The macrostate rapidly and successively changes to be in a gigantic number of different: a) Thermodynamic frequency b) Thermodynamic states c) Microstates d) Frequency states 1. The energy spent in doing work stored in the wire is known as: a) Kinetic energy b) Potential energy c) Stain energy d) None 2. The property by virtue of which a liquid opposes relative motion between its different layers is called: a) Viscosity a) Elasticity b) Relativity c) Malleability 13. It is the science that discusses the relation of heat to mechanical work: a) Thermodynamics b) Thermochemistry c) Dynamics d) None 3. Callender and Griffith Bridge apparatus is used in finding the: a) Voltage b) Heat c) Current d) Resistance 14. The boiling point of a liquid is raised by increase of: a) Mass b) Pressure c) Temperature d) Volumes 4. Demagnetisation thermometers are used for measurement below the temperature: b) -2720 C a) -10 C d) -2620 C c) -500 C 15. The production of E.M.F by a thermocouple when one of the junctions is heated keeping the other cold is known as: a) Thomson effect b) Peltier effect c) Raman effect d) Seebeck effect 5. Jaly’s steam calorimeter is used for determining specific heat of: a) Solid b) Suspension c) Gas d) Liquid 16. Helium was liquefied by K. Onnes in: a) 1900 b) 1808 c) 1908 d) 1800 6. Quantum laws are applicable to: a) Energy b) Work c) Power d) Force 7. All gases are composed of: a) Particles c) Atom 17. A perfect body that absorbs totally all the radiations of any wavelength falling on it is called: a) Blackbody b) White body c) Radiator body d) Absorb body b) Molecules d) Element 18. A non-contacting device that intercepts and measures thermal radiation to determine the temperature of an object’s surface is called: 8. PV=RT is: a) Boyle’s law b) Dalton’s Law c) Charles’s Law d) Avogadro’s Law a) Lactometer c) Hydrometer b) Pyrometer d) Voltmeter 19. The sun consists of a central hot core terminating in the: a) Lithosphere b) Atmosphere c) Photosphere d) None 9. The phenomenon of viscosity is due to the transport of: a) Work b) Energy c) Force d) Momentum 20. Which is used for the determination of the velocity of light: a) Kerr Cell b) Michelson Method c) Prison cell d) Pease Cell 10. The gaseous and liquid states may be regarded as distinct stages of a series of __________continuous changes: a) Physical b) Chemical c) Thermal d) None ANSWERS: 1. c 2. a 9. d 10. a 17. a 18. b 11. In classical statistics each compartment wise distribution of a system of particles is known as: a) Solid state b) Macrostate c) Liquid state d) None 3. d 11. b 19. c 4. b 12. c 20. a 5. c 13. a 6. a 14. b 7. b 15. d 8. c 16. c Contributed by Shri Aziz Ahmed Hashmi, Behind Seema Building, Roushan Khan Corner, Parbhani-431401 (M.S.) 41 SCIENCE REPORTER, JANUARY 2011