1. Cytology
    2. 1. Tools used in Cytology
    2. Cell Biology
    3. Cell cycle
    4. Biomolecules
  2. Genetics
    3. 5. Introduction
    6. Inheritance
    7. Mutation and Polypoidy
  3. Plant Anatomy
    4. 8. Plant Anatomy
    9.
  4. Plant Physiology
    5. 10. Respiration
    11. Photosynthesis
    12. Growth and Growth hormone
    13. Mode of nutrition and Habitat in Plants
  5. Classification and Biodiversity
    6. 14. Classification
    15. Virus
    16. Bacteria
    17. Thallophyta
    18. Bryophyta
    19. Pteridophyta
    20. Gymnosperm
    21. Reproduction
    22. Morphology of Angiosperm
  6. Taxonomy, Ecology and Application of biology
    7. 23. Taxonomy
    24. Ecology
    25. Application of Biology
Plant Physiology
11. Photosynthesis
1. Energy for the ATP formation in PS-II comes directly from: [IOM 2007]

[IOM 2007]

  • Energy from H^+ gradient
  • Combination of glucose
  • Formation of ADP
  • Lactic acid formation
2. Volume of CO_2 absorbed in photosynthesis is almost: [IOM 2006]

[IOM 2006]

  • Double of O_2 liberated
  • Equal to O_2 liberated
  • Half of O_2 liberated
  • Negligible to O_2 liberated
3. In some grasses C_4 pathway occurs. It is:    [BPKIHS 2000]

[BPKIHS 2000]

  • Additive 
  • Accumulative
  • Cumulative
  • Alternative
4. Herbicide kills grasses (weeds) by:  [BPKIHS 2000]

[BPKIHS 2000]

  • Closing stomata and inhibiting gaseous exchange
  • Blocking PS-II
  • Inhibiting respiration
  • Inhibiting absorption of water
5. Which of the following induces photo-respiration?  [BPKIHS 2001]

[BPKIHS 2001]

  • High temperature
  • High O_2 concentration
  • High CO_2 concentration
  • High light intensity
6. The no. of ATP and NADPH2 required to fix 3CO_2 molecules in Calvin cycle: [BPKIHS 2001]

[BPKIHS 2001]

  • 6 ATP and 6 NADPH2
  • 9 ATP and 6 NADPH2
  • 12 ATP and 6 NADPH2
  • 6 ATP and 12 NAPH2
7. Which is wrong?      [BPKIHS 2002]

[BPKIHS 2002]

  • Food is manufactured in presence of light
  • Photon in absorbed by chlorophyll molecule
  • Light is necessarily absorbed by plants for biological change
  • Flow of protons in electron transport chain is passive
8. In Photo-respiration, CO_2 loss takes place in [BPKIHS 2002]

[BPKIHS 2002]

  • Chloroplast
  • Mitochondria
  • Peroxisomes
  • Nucleus
9. In C_4 cycle, in mesophyll cells, CO_2 is picked up by: [BPKIHS 2002]

[BPKIHS 2002]

  • PEP
  • RUBP
  • RUBISCO
  • Malic acid
10. In C_4 plants, Calvin cycle takes place in: [BPKIHS 2002]

[BPKIHS 2002]

  • Mesophyll cells
  • Bundle sheath cells
  • Stomata
  • Epidermal cells
11. Which is correct about C_4 plants?   [BPKIHS 2002]

[BPKIHS 2002]

  • Only PS-I is involved in photosynthesis
  • All the chloroplasts are same in C_4 plants
  • It can perform photosynthesis in low CO_2 concentration
  • All
12. Photosynthesis is:
  • Conversion of CO_2 and H_2 O to carbohydrates and O_2
  • Absorption of visible light by chlorophyll and transferring energy to CO_2 and H_2 O
  • A photosensitization reaction
  • Absorption of CO_2 and water vapour in air by plant with the help of chlorophyll
13. Light break reaction means:  [BPKIHS 2004]

[BPKIHS 2004]

  • Influence of short periods of dark in the light periods
  • Influence of short periods of light in the dark periods
  • Influence of GA_3 on light periods
  • Production of some inhibitors during light periods
14. Chemical formula of 'chlorophyll' is:  [BPKIHS 2005]

[BPKIHS 2005]

  • C_55 H_70 N_4 Mg
  • C_55 H_72 O_5 N_4 Mg
  • C_10 H_16 N_8 Mg
  • C_40 H_56 O_2 N_4 Mg
15. In chlorophyll-b, −CHO (aldehyde) group is attached to the 3^rd carbon atom of:
  • 2^nd pyrrole ring
  • 1^st pyrrole ring
  • 3^rd pyrrole ring
  • 4^th pyrrole ring
16. The first acceptor of CO_2 in C_4 pathway is:  [MOE]

[MOE]

  • PEP
  • PAA
  • RUBP
  • RUP
17. Light reaction of photosynthesis occurs in:  [BPKIHS 1994]

[BPKIHS 1994]

  • Stroma
  • Walls of thylakoids
  • Palisade cell
  • Cristae of mitochondria
18. The electron acceptor during photosynthesis is:  [BPKIHS 1995]

[BPKIHS 1995]

  • Cytochrome
  • CO_2
  • Chlorophyll
  • Starch
19. Dark reaction of photosynthesis occurs in  [BPKIHS 1996]

[BPKIHS 1996]

  • Grana
  • Grana lamellae
  • Stroma
  • None
20. Universal hydrogen acceptor   [BPKIHS 1996]

[BPKIHS 1996]

  • NAD
  • NADP
  • NADH2
  • ADP
21. A cell devoid of chlorophyll will not  [BPKIHS 1997]

[BPKIHS 1997]

  • Liberate O_2
  • Liberate CO_2
  • Manufacture carbohydrate
  • Take CO_2
22. Photorespiration is due to:  [BPKIHS 1997]

[BPKIHS 1997]

  • Excess of O_2
  • Deficient of CO_2
  • Intensity of light
  • Excess of CO_2
23. The rate of photosynthesis is independent of  [BPKIHS 1997]

[BPKIHS 1997]

  • Light quality
  • Light intensity
  • Duration of light
  • CO_2 concentration
24. Phosphoenol pyruvate acts as CO_2 acceptor in: [BPKIHS 1998]

[BPKIHS 1998]

  • C_3 plants
  • Cotton
  • Maize
  • Wheat
25. Light energy is converted into chemical energy in:  [MOE 2008]

[MOE 2008]

  • Respiration
  • Photosynthesis
  • Both 
  • None
26. Moll's half leaf experiment can prove:  [MOE 2063]

[MOE 2063]

  • Water is required for photosynthesis
  • CO_2, water and O_2 are required for photosynthesis
  • CO_2 is required for photosynthesis
  • O_2 is required for photosynthesis
27. Chemoautotrophs obtain energy for photosynthesis by the oxidation of: [MOE 2063]

[MOE 2063]

  • H_2 S
  • S
  • N_2
  • CO_2
28. Which of the following represent photosynthetic equation:  [MOE 2063]

[MOE 2063]

  • 6CO_2+12H_2 O→C_6 H_12 O_6+6O_2+6H_2 O
  • 6CO_2+C_2 H_2 O→C_6 H_12 O_6+6O_2
  • C_6 H_12 O_6+CO_2→6H_2 O+6O_2
  • O_2+CO_2+H_2 O→C_5 H_12 O_6
29. The % of sunlight utilized by the green plant in the net plant productivity during photosynthesis?  [MOE 2062]

[MOE 2062]

  • 10%
  • 1%
  • 0.1%
  • 0.5%
30. HSK pathway is also called as  [MOE]

[MOE]

  • C_2 cycle
  • C_3 cycle
  • C_4 cycle
  • C_1 cycle
31. To demonstrate there is no starch formation in leaves of a green plant kept in dark for 1 or 2 days the leaves are tested by:   [MOE 2062]

[MOE 2062]

  • Directly dipping in iodine solution
  • Decolorizing with xylem and dip in iodine solution
  • Acetone and Iodine solution 
  • Decolorizing with alcohol and dip in iodine solution
32. During photosynthesis to trace out the path of carbon fixation, the isotope used is:
  • P^15
  • N^14
  • C^14
  • O^18
33. Thylakoids are associated with:  [MOE 2002]

[MOE 2002]

  • Transpiration
  • Photosynthesis
  • Guttation
  • Respiration
34. In photosynthesis O_2 is liberated due to: [MOE 2000]

[MOE 2000]

  • Hydrolysis of carbohydrates
  • Photolysis of water
  • Syngenesious anthers
  • Photophosphorylation
35. Photosynthetic plants are:  [MOE 2056]

[MOE 2056]

  • Sporophytes
  • Hetertrophs
  • Parasites
  • Autotrophs
36. The 1^st stable product in carbon assimilation is: [MOE 2056]

[MOE 2056]

  • Glucose
  • Oxygen
  • Pyruvic acid
  • PGA
37. Which wavelength of light carries out photosynthesis in bacteria?  [MOE 1997]

[MOE 1997]

  • Ultra-violet
  • Blue
  • Red
  • Far-red
38. During photosynthesis the product of the light reaction is:
  • NADPH and ADP
  • Cytochrome
  • NADPH2 and ATP
  • None 
39. The core metal of chlorophyll molecule is: [IE-2001]

[IE-2001]

  • Fe
  • Cu
  • Mg
  • Zn
40. In plant food is stored in the form of:  [IE-2002]

[IE-2002]

  • Glucose
  • Monosaccharide
  • Starch
  • Glycogen
41. ATP formation during photosynthesis is  [IE-2003]

[IE-2003]

  • Phosphorylation
  • Photophosphorylation
  • Oxidative phosphorylation
  • None of the above
42. Hill  reaction occurs in   [IE-2004]

[IE-2004]

  • High altitude plants
  • Total darkness
  • Absence of water
  • Presence of ferricyanide
43. Photosynthesis occurs in  [IE-2005]

[IE-2005]

  • Chloroplast
  • Chromoplast
  • Mitochondria
  • Golgi bodies
44. Plants don't store carbohydrate as glucose because:  [IE-2006]

[IE-2006]

  • Dissolves in water and alters osmotic balance
  • Would replace ribose in DNA synthesis
  • Glucose attracts insects
  • It is not permanent
45. Calvin cycle in C_4 plants occurs in  [BPKIHS 2014]

[BPKIHS 2014]

  • Mesophyll chloroplast
  • Bundle sheath chloroplast
  • Both a and b
  • More in mesophyll chloroplast and less in bundle sheath chlorplast
46. The effect of excess O_2 concentration causing decrease in photosynthsis is known as:  [BPKIHS 2014]

[BPKIHS 2014]

  • Quantum yield
  • Red drop effect
  • Emersion-enhancement effect
  • Warburg's effect
47. Rate of photosynthesis will be higher in
  • Red light
  • Blue light
  • Green light
  • Yellow light
48. Cytochrome is
  • Copper containing protein
  • Nickel containing protein
  • Zinc containing protein
  • Iron containing protein
49. 'Calvin cycle' is synonymous with  [BPKIHS 2010]

[BPKIHS 2010]

  • C_3 cycle
  • C_4 cycle
  • CAM pathway
  • Glycolate cycle
50. The first step involved in the photosynthesis  [IOM 2016]

[IOM 2016]

  • Photolysis of water
  • Excitation of electron from chlorophyll
  • Fixation of CO_2
  • Production of NADPH2 and ATP from PS-I/II
51. Cytochrome helps in
  • Electron transport
  • Glucose converting into CO_2
  • Glycolysis
  • Kreb's cycle
52. Inhibition of photosynthesis with the increase in oxygen concentration is  [IOM 2014]

[IOM 2014]

  • Electron transport system
  • Blackmann effect
  • Pasteur effect
  • Warburg effect
53. The process of photolysis of water takes place during  [IOM 2013]

[IOM 2013]

  • Electron transport system
  • Photophosphorylation
  • Dark reaction
  • Light reaction
54. ATP is formed in triphosphate in a large number during  [IOM 2012]

[IOM 2012]

  • Light reaction of photosynthesis
  • Dark reaction
  • Glycolysis
  • Kreb's cycle
55. Primary acceptor of CO_2 in photosynthesis is  [MOE 2014]

[MOE 2014]

  • Glucose
  • Ribulose-1,5-biphosphate
  • Ribulose phosphate
  • Phosphoglyceric acid
56. Stomata open at nigh and close during day in  [MOE 2013]

[MOE 2013]

  • C_3 plants
  • C_4 plants
  • CAM plants
  • All plants
57. Carbon fixation in C_4 plants is catalyzed by [MOE 2013]

[MOE 2013]

  • RuBP carboxylase
  • PEP carboxylase
  • Carbonic anhydrase
  • Carboxydismutase
58. Kranz anatomy is found in  [MOE 2012]

[MOE 2012]

  • C_4 plants
  • C_3 plants
  • Succulent plants
  • Woody plants
59. First stable compound in C_3 cycle is  [MOE 2068]

[MOE 2068]

  • PGA
  • PGAl
  • Glucose
  • Starch
60. Which organelle in cell division consists of grana and stroma?
  • Mitochondria
  • Golgi bodies
  • Plastids
  • Ribosomes