PHOTOSYNTHESIS; FILL IN THE BLANKS {NCERT}

PHOTOSYNTHESIS QUESTIONS

1] The ________ placed in suspension of aerobic bacteria were used to the sites of oxygen evolution.

2] Write the correct equation of photosynthesis ___________________________________________________.

3] ___________ are substance in chlorophyll that has an ability to absorb light at specific wave length.

3A] The bundle rich cell in C4 plant is rich in ____________ enzyme.

4] Photochemical reaction includes 4 steps….

____________ , ____________ , ____________ & ___________ .

5] The process through which ATP is synthesized by cell is called _________________. 

6] In PS1 reaction center, ________ absorbs 700nm wavelength of ________ light causing electron to get excited.

7] Joseph Priestley in _______ performed series of experiment that revealed the essential role of air in photosynthesis.

8] Within the chloroplast- there is membranous system which consist of ___________, _____________ & ________________. 

9] The process by which ATP & NADPH are used to generate sugar are called as _________________ of photosynthesis.

10] The 3 stages of Calvin cycle are _________, __________ & _______.

11] The light reaction is called as _________ reaction & dark reaction is called as _____________

12] The cell type in which Calvin cycle take place….

C3 = ____________

C4 = ____________

13] How many turns of Calvin cycle pathway are required to form one molecule of glucose? Answer ________

14] For every CO2 molecule entering the Calvin cycle, ___ of ATP & _____ of NADPH are required

15] The large cell around the vascular bundle of the C4 plant are called ____________

16] Complete the formula…….

______ + __________ = RuBisco = 2 * 3PGA

16A] Due to lack of ______________ & tolerance to high temperature, there is better productivity in C4 plant.

17] Which cell in plant have RuBisco?

C4 = _______

C3 = _______

18] The use of radioisotopes _______ lead to discover of Calvin cycle. 

18A] The enzyme PEPcase is present in _________ cell of C4 plant.

19] The scientist _____________ uses purple & green bacteria to demonstrate photosynthesis is light dependent reaction. 

20] The electron that are moved from photosystem 2 is replaced by electron available due to ____________________

21] The color of pigment in chlorophyll……

# Chlorophyll – b =

# Xanthophyllous =

# Carotenoids = 

21A] The long form of RuBisco enzyme is __________________

22] The maximum absorption of light occurs in _______ & _______ region of spectrum during photosynthesis.

22A] Water stress makes the leaves _______ thus reducing the surface area and decreasing metabolic activity.

23] How many cell types does the leaf have that fix Co2

C4= __________

C3= ___________

23A] Name the two plant where higher CO2 had been used to increase the production? Answer _________ & _____________

24] The regeneration step requires _____ for phosphorylation to form RuBP 

25] __________ showed that sunlight is essential for photosynthesis by using aquatic plants.

26] Complete the following equation……

ATP + NADPH = ________ + ___________

27] In Calvin cycle, photorespiration is present at high light intensity…. 

C3 = _________

C4 = ___________

27A] Name the scientist who had proposed law of limiting factor? Answer ____________

28] When the two-photosystem work in a series, first PS1 & then PS2 a process called _____________ photo phosphorylation occurs.

29] Oxygen evolved by green plant comes from water not from CO2 was proved by __________ technique.

30] The _____________ system of chloroplast is responsible for trapping the light energy & also responsible for synthesis of ATP & NADPH.

31] The transport of electron during photosynthesis is known as _________ due to its characteristic shape.

31A] The ___________ enzyme has a much greater affinity for CO2 when the CO2: O2 is nearly equal. 

32] ____________ is the fixation of CO2 into stable two molecule of 3-PGA.

32A] Oxaloacetic acid formed in mesophyll cell in C4 pathway get converted into _______ or _________.

33] InPS1 or the reaction center – Chlorophyll-a has an absorption peak at ________ while in PS2, it has an absorption peak at ______.

34] The first product identified in Calvin C3 cycle is ____________.

34A] Increase in sunlight exposure beyond a point causes the breakdown of __________   and decreases photosynthesis.

35] In Hatch & Slack pathway, the primary CO2 acceptor is a _____________. 

36] In ________ year, scientist ___________ provided evidence for production of glucose when plant grow.

37] Photosynthesis is a ____________ process by which they use light energy to drive the synthesis of organic compounds

38] The complete formula proposed by Cornelius Van Neil is 2H2A + CO2 ----Light----- ______ + CH2O + H2O

38A] Kranz means _________ and it is reflection of the arrangement of cell in C4 plant. 

39] The end product of light reaction is _____________ & __________.

40] Which is the primary Co2 acceptor 

C4 = ______

C3= _______

41] The chlorophyll-a contains ________ or _________ pigments in the chromatograph. 

42] Complete the formula for splitting of water…….

2H2O = _____ + ______ +_______

43] The correct name of enzyme used in carboxylation process is ______________.

43A] If the chemical process is affected by more than one factor then its rate will be determined by the factor which is nearest to its _____________ value.

44] The first product identified in C4 cycle is ________.

45] _______________ process is responsible for release of oxygen into atmosphere.

46] Each photosynthesis has all pigment except one molecule of chlorophyll – a, this is called as ___________.

46A] In ____________________, there is neither synthesis of ATP or NADPH but results in release of CO2.

47] ______________ cells in the leaves have a large number of chloroplasts. 

48] The process of phosphorylation by which ATP is generated occurs at __________ & ____________ of the cell. 

49] The maximum absorption of light occurs by _______ pigment.

50] Name the scientist who uses prism to the site of oxygen evolution? Answer_____________.  

51] The electron in electron transport system moves __________ after excitement to reach electron acceptor and then move _________ to reach molecule rich energy.

52] In PS1, the possible site ___________ where the electron is circulated within the photosystem & the phosphorylation occur due to cyclic flow of electron.  

53] The number of carbons in the primary Co2 fixation product in Calvin cycle……

C3 = ________

C4 = ________ 

54] Glucose formation occurs when ____ molecule of ATP for phosphorylation and ____ of NADPH for reduction per CO2 molecule fixed.

55] Regeneration of the CO2 acceptor molecule _______ is crucial if the cycle is continuously uninterrupted.

56] Outcome of Calvin cycle….

# Six CO2     = _________

# _______      = 18 ADP

# 12 NADPH = ________

57] Plant that are adapted to ________ region have the C4 pathway.

58] _____________ enzyme is the most abundant enzyme in the world.

59] The concentration of CO2 in the atmosphere is _________.

60] In Calvin cycle, CO2 fixation rate under high light condition….

C3 = ________

C4 = ________

61] In________ year, law of limiting of factor comes into effect.

62] Water stress causes them ________ to close hence reducing the CO2 availability.

63] In _________ part of chloroplast, enzymatic reactions synthesize sugar

64] C4 plant lack photorespiration…. True or False. Answer____

65] In Calvin cycle, weather photorespiration would be present at low CO2 concentration…..

C4 = _______

C3 = _________                                   

66] Kanz anatomy refer to ________ part of C ____ plant.

67] Malic acid formed in mesophyll cell of C4 plant are broken down to release _______ & ________ in bundle sheath cell.

68] Photorespiration pathway gives _________ & ____________ instead of PGA 

69] In photosynthesis, maximum sunlight used by plant is around _________ %

70] C4 plant show saturation at _______ of CO2 while C3 plant show saturation at ________ of CO2

PHOTOSYNTHESIS ANSWER

1] Cladophora

2] 6CO2 + 12H2O---- light------ = C6H12O2 + 6H2O + 6O2

3] Pigment

3A] RuBisco

4] Light absorption, water splitting, oxygen release & Chemical energy formation.

5] Phosphorylation

6] Chlorophyll-a, red

7] 1770

8]Granna, stroma lamella, matrix stroma

9] Biosynthetic

10] Carboxylation, reduction, regeneration

11] Photochemical, Carbon

12] Mesophyll & Bundle of sheath

13] 6

14] 3 ,2

15] Bundle sheath cell

16] RuBP + CO2

16A] Photorespiration

17] Bundle, Mesophyll

18] 14C

18A] Mesophyll

19] Cornelius Van Neil

20] splitting

21] Yellow green, Yellow, Yellow – orange

21A] Ribulose biohosphate carboxylase oxygenase

22] Red, Blue

22A] Wilt

23] 2, 1

23A] Tomatoes, bell pepper

24] 1 ATP

25] Jan Ingenhousz

26] ADP, p1 +NADP+

27] High, negligeable

27A] Blackmann

28] Non cyclic

29] Radioisotope

30] Membranous

31] Z – scheme

31A] RuBisco

32] Carboxylation

32A] Malic acid, Aspartic acid

33]  700nm, 680 nm

34] 3- phospoglyceric acid

34A] Chlorophyll

35] PEP

36] 1854, Julius von sachs

37] Physio-chemical

38] 2A

38A] Wreath

39]ATP, NADPH

40] PEP, RuBp

41]Bright, Blue- green

42] 4H+, O2, 4e-

43]RuBp carboxylase–oxygenase

43A] Minimal

44]Oxaloacetic acid

45] Photosynthesis

46] Antennae

46A] Photorespiration

47] Mesophyll

48] Mitochondria & chloroplast

49] Chlorophyll-a

50]T W Engelmann

51] Upward, downward

52] Stroma lamellae

53]3, 4

54] 2, 2

55]RuBP

56] 1 glucose, 18 ATP, 12 NADP

57] Dry tropican

58]RuBisco

59] 0.03 to 0.04

60]medium, high

61] 1905

62]Stomata

63] Stroma

64]True

65] Negligible, high

66] leaves, 4

67] CO2, 3-carbon molecule

68] Phosphoglycerate & Phosphoglycolate

69] 10

70] 360, 450