
1. Photosynthetic pigments are located in
a) stroma
b) grana
c) cytoplasm
d) thylakoids
2. The Dark reaction of photosynthesis was worked out by:
a) Hatch and Slack
b) Melvin Clavin
c) Arnold
d) Emerson
3. During photosynthesis oxygen is evolved from
a) carbohydrates
b) proteins
c) sunlight
d) water
4. Light reaction occur in
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Chloroplast: Photosynthetic apparatus |
a) Grana
b) stroma
c) thylakods
d) mitochondria
5. Photosynthetic pigments absorb
a) UV radiation
b) IR radiation
c) Visible radiation
d) Gama radiation
6. In cyclic photophorylation the high energy electrons are driven out from
a) Chlorophyll a 683
b) P 700
c) Chlorophyll a 673
d) P 870
7. One among the following elements is very important for photolysis of water
a) Mg
b) Mn
c) Fe
d) Zn
8. The hypothesis that all photosynthesis organisms require a source of hydrogen was first proposed by
a) Van Niel
b) Hatch and Slack
c) Hill
d) Ruber and Kamen
9. In the photosynthesis process, PS II absorbs energy at or just below
a) 700 nm
b) 870 nm
c) 680 nm
d) 780 nm
10. The amount of ATP required for the synthesis of one glucose molecule in C4 pathway is
a) 18 ATP
b) 30 ATP
c) 12 ATP
d) 24 ATP
11. In bacterial photosynthesis comes from
a) H2S
b) H2O
c) H2SO4
d) NH3
12. Isotopes popularly known to have been used in study of photosynthesis:
a) C16 and N15
b) C14 and O16
c) P32 and C12
d) C11 and P32
13. Dark reaction is traced by
a) O19
b) P32
c) X-rays
d) 14CO2
14. Photosynthesis is maximum in
a) Blue light
b) Red light
c) Blue and green light
d) Blue and red light
15. Law of limiting factor was proposed by
a) Black man
b) Hill
c) Arnold
d) Engle man
Answers:
- d) thylakoids
- b) Melvin Clavin
- d) water
- a) Grana
- c) Visible radiation
- b) P 700
- a) Mg
- a) Van Niel
- c) 680 nm
- b) 30 ATP
- a) H2S
- b) C14 and O16
- d) 14CO2
- b) Red light
- a) Black man
1. Photosynthesis, a process of manufacture of organic compound is

2. Land plants utilize for photosynthesis
3. Who proved that oxygen evolved in photosynthesis comes from water?
4. The first product of photosynthesis is sugar and it is converted
5. The site of light reactions of photosynthesis is

6. The dark reaction in photosynthesis is called so because it
7. Which is the most effective wavelength of light for photosynthesis?
9. The bacterial photosynthesis differs from the green plant photosynthesis in
10. During photochemical reaction of photosynthesis

a) Catabolic process
b) Anabolic process
c) Both (a) and (b)
d) None of these
2. Land plants utilize for photosynthesis
a) 1% of water absorbed
b) 10% of water absorbed
c) 0.1% of water absorbed
d)100% of water absorbed
3. Who proved that oxygen evolved in photosynthesis comes from water?
a) Mayer
b) Melvin Calvin
c) Hatch
d) Ruben and Kamen
4. The first product of photosynthesis is sugar and it is converted
a) Into starch in all plants
b) Into proteins
c) Rarely into anything else
d) Glycogen
5. The site of light reactions of photosynthesis is

a) grana
b) stroma
c) thaylakoids
d) Both (a) and (b)
6. The dark reaction in photosynthesis is called so because it
a) Cannot occur during day time
b) it is light dependent
c) it is light independent
d) occurs rapidly at night
7. Which is the most effective wavelength of light for photosynthesis?

a) Green
b) Violet
c) Red
d) Yellow
8. Q 10 is
a) The respiratory coefficient
b) A temperature coefficient
c) A scale of quality
d) A constant in quantum equation
9. The bacterial photosynthesis differs from the green plant photosynthesis in
a) Photolysis of water
b) Evolution of oxygen
c) Obtaining energy from sunlight
d) The obtaining energy from chemical compounds
10. During photochemical reaction of photosynthesis
a) Liberation of Oxygen
b) Liberation of ATP and NADPH
c) Assimilation of CO2
d) Liberation of Oxygen, formation of ATP and NADPH2 takes place
Answers
1. b) Anabolic process
2. a) 1% of water absorbed
3. d) Ruben and Kamen
4. a) Into starch in all plants
5. a) grana
6. c) it is light independent
7. c) Red
8. b) A temperature coefficient
9. d) The obtaining energy from chemical compounds
10. d) Liberation of Oxygen, formation of ATP and NADPH2 takes place
16. The process of Photosynthesis is

16. d) Reductive, endergonic and anabolic
17. c) Green sulphur Bacterium
18. d) J. Ingenhouz
19. a) algae
20. b) Photolysis of water
21. b) stroma
22. b) Green light
23. d) Hydrogen sulphide
24. b) 1 %
25. b) Produce ATP and a reducing substance

a) Reductive, exergonic and catabolic17. A photosynthetic organism which does not release oxygen is
b) Reductive, endergonic and catabolic
c) Reductive, endergonic and anabolic
d) Reductive, exergonic and anabolic
a) Blue green algae18. Who was the first to study the influence of light during photosynthesis?
b) Green alga
c) Green sulphur Bacterium
d) Lichen
a) Van Niel19. 90% of the total photosynthesis is carried out by
b) Blackmann
c) Warburg
d) J. Ingenhouz
a) algae20. An essential process connected with photosynthesis is
b) Mesophytes
c) Pteridophytes
d) Xerophytes
a) Synthesis of glucose21. The site of Dark reaction of photosynthesis is
b) Photolysis of water
c) Photophosphorylation
d) Breakdown of glucose
a) grana22. Which of the following is least effective in photosynthesis?
b) stroma
c) thaylakoids
d) Both (a) and (b)
a) Blue light23. The hydrogen donor in bacterial photosynthesis is usually
b) Green light
c) Red light
d) Sunlight
a) Water24. The percentage of light energy fixed in photosynthesis is generally around
b) Ammonia
c) Sulphur
d) Hydrogen sulphide
a) 0.1 %25. Light is necessary in the process of photosynthesis to
b) 1 %
c) 10%
d) 100%
a) Split carbon dioxideAnswers
b) Produce ATP and a reducing substance
c) Release energy
d) combine carbon dioxide and water
16. d) Reductive, endergonic and anabolic
17. c) Green sulphur Bacterium
18. d) J. Ingenhouz
19. a) algae
20. b) Photolysis of water
21. b) stroma
22. b) Green light
23. d) Hydrogen sulphide
24. b) 1 %
25. b) Produce ATP and a reducing substance