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Posted By: sac Member Level: Diamond Posted Date: 25 Apr 2008
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2007 B.Sc Botany Engineering / Medical Entrance Test - Biology Model University Question paper
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1. Chlorophyll is soluble only in
a) water b) organic solvents c) Water and organic solvents d) any solvent
2. The wave length most active during Photosynthesis
a) 400-500nm b) 400-700nm c) 200-450nm d) 516-600nm
3. Which of the following is present at 3 carbon atom of IInd Pyrrole ring of 'Chl.a" molecule?
a) -CHO group b) -COOH Group c) -CH3 group d) Mg
4. The assimilatory powers produced during photosynthesis are..
a) H2O and O2 b) RuBP & RuMP c) C6H12O6 & PGAL d) ATP & NADH2
5. In C4 Plants, initial CO2 fixation takes place in Chloroplasts of
a) Guard Cells b) Spongy Mesophyll c) Palisade tissue d) Bundle sheath cells
6. Which element is essential for photosynthesis of water?
a) N b) Cl c) C d) O
7. C4 plants have photosynthetic rate because
a) They have no photorespiration b) They have krantz anatomy c) They have PEP as CO2 acceptor d) They can photosynthesis at low light intensity.
8. The first product of photorespiration
a) Glycolic acid b) Serine c) Phosphoglycolate d) Glycine
9. Photosynthetic evolution of O2 requires
a) Co-enzyme b) Fe- enzyme c) Mn-enzyme d) Zn-enzyme
10. Warbug effect is decreased rate of photosynthesis at
a) Low concentration of CO2 b) High concentration of CO2 c) Higher concentration of O2 d) None.
11. NADPH is generated through
a) PS-I b) PS-II c) anaerobic respiration d) Glycolysis
12. Organelle associated with photorespiration is
a) lysosome b) Peroxisome c) Glyoxisome d) mesosome
13. The wavelength of light most absorbed during photosynthesis is
a) 400nm b) 500nm c) 550nm d) 660nm
14. World environment day is celebrated on ..
a) 3rd decemeber b) 29th December c) 5th June d) 7th April
15. Krantz anatomy pertains to
a) Flower b) Leaf c) Root d) Stem
16. With rise in turgidity wall pressure with
a) Decrease b) Increase c) Fluctuate d) remain unchanged
17. Movement of water through semipermeable membrane causes
a) Wall pressure b) Suction Pressure c) Turgar Pressure d) Osmotic Pressure
18. Rate of transpiration higher than rate of water absorption shall cause
a) Growth b) Leaf fall c) Wilting d) Death
19. A plant cell become turgid due to
a) Plasmolysis b) exosmosis c) Endosmosis d) Diffusion
20. The rate of transpiration increases by
a) Very high wind velocity b) Formation of sunken stomata c) High saturation deficit d) Low light intensity
21. Maximum transpiration occurs in
a) Mesophytes b) Hydrophytes c) Xerophytes d) Algal Cells
22. Wilting of plants occurs when
a) Xylem is blocked b) Both xylem and Phloem blocked c) Phloem is blocked d) None of the above
23. Influx- Efflux of K+ ions for stomatal movement was proposed by
a) Scarth b) Llyod c) Devlin d) Levitt
24. The water potential of an aqueous solution will be
a) Zero b) More than One c) Less than One d) Infinite.
25. In rainy season, doors and windows swells up due to
a) Imbibition of water b) Endosmosis of water c) Separation of xylem vessels d) All the above
26. Plants such as pitcher plant and 'sundew' are
a) Carnivorous b) Symbiotic c) Autotrophic d) Parasitic
27. Nitrogen is an important component of
a) Proteins b) Lipids c) Carbohydrates d) Waxes
28. Plants absorbed the element nitrogen in the form of
a) Nitrogen gas b) Nitric acid c) Nitrites d) Nitrates
29. Premature leaf fall is caused due to the deficiency of
a) K b) Ca c) N d) P
30. The clorophyll molecule has
a) Phosphate head & Prophyrin tail b) Porphyrin head and phytol chain c) Phytol head and porphyrin tail d) None
31. Photolysis of water during photosynthesis occur with the help of
a) PS-1 b) PS-II c) Cytochrome d) Ferredoxin
32. Calvin cycle occurs in
a) Chloroplast b) Cytoplasm c) Mitochondria d) Glyoxisomes
33. Which of the following is needed in both photosynthesis and respiration
a) Sunlight b) Chlorophyll c) Glucose d) Cytochrome
34. Photophosphorylation means..
a) Formation of ATP from ADP b) Formation of NADP c) Formation of ADP from ATP d) Formation of PGA
35. Non Cyclic photosphosphorylation involves
a) PS-II Only b) PS I only c) Both PS-I and PS - II d) None
36. Photorespiration is favoured by
a) High O2 & low CO2 b) lowO2 & high CO2 c) Low temp. and high O2 d) low light and high O2
37. The core metal of chlorophyll is
a) Fe b) Mg c) Ni d) Cu
38. Which of the following is required for Photosynthetic 02 evolution
a) Copper b) Iron c) Manganese d) Zinc
39. Water Potential is maximum in the case of
a) Pure water b) 2% glucose c) 10% Nacl d) 10% glucose
40. A cell will become turgid on being placed in
a) Isotonic Solution b) Hypotonic Solution c) Hypertonic Solution d) Both a & b
41. Osmotic potential is numerically equal to
a) T.P b) DPD c) O.P d) W.P
42. In the mechanism of Active absorption the minerals are absorbed
a) Along concentration gradient b) By osmosis c) Against concentration gradient d) By simple diffusion
43. In plants common symptom caused by deficiency of P, K, Ca and Mg is the...
a) Bending of leaf tip b) Formation of Anthocyanin c) Poor development of Vasculature d) Appearance of dead Necrotic Areas
44. Heterotrophic nutrition is found in
a) Pistia b) Opuntia c) Drosera d) Mangifera
45. Which of the following is a saprophyte?
a) Drosophyllum b) Monotropa c) Cassytha d) Ixora
46. Ion Uptake is active because
a) Ions are active b) Ions move freely c) Energy is expended d) Ions move positively
47. Mo Plays a major role in
a) Promoting flowering b) Nitrogen Fixation c) Carbon Fixation d) Protein Synthesis
48. Zinc is essential for
a) Biosynthesis of Chlorophyll b) Biosynthesis of 3-IAA c) Stomatal Movement d) Oxidation of Carbohydrates
49. Minerals absorbed by roots move to leaves through
a) Xylem b) Phloem c) Sieve Tube d) Companion Cell
50. Chlorophyll Contain
a) Fe b) Mg c) K d) Mn
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