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
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
16. The process of Photosynthesis is
Photosynthesis
a) Reductive, exergonic and catabolic
b) Reductive, endergonic and catabolic
c) Reductive, endergonic and anabolic
d) Reductive, exergonic and anabolic
17. A photosynthetic organism which does not release oxygen is
a) Blue green algae
b) Green alga
c) Green sulphur Bacterium
d) Lichen
18. Who was the first to study the influence of light during photosynthesis?
a) Van Niel
b) Blackmann
c) Warburg
d) J. Ingenhouz
19. 90% of the total photosynthesis is carried out by
a) algae
b) Mesophytes
c) Pteridophytes
d) Xerophytes
20. An essential process connected with photosynthesis is
a) Synthesis of glucose
b) Photolysis of water
c) Photophosphorylation
d) Breakdown of glucose
21. The site of Dark reaction of photosynthesis is
a) grana
b) stroma
c) thaylakoids
d) Both (a) and (b)
22. Which of the following is least effective in photosynthesis?
a) Blue light
b) Green light
c) Red light
d) Sunlight
23. The hydrogen donor in bacterial photosynthesis is usually
a) Water
b) Ammonia
c) Sulphur
d) Hydrogen sulphide
24. The percentage of light energy fixed in photosynthesis is generally around
a) 0.1 %
b) 1 %
c) 10%
d) 100%
25. Light is necessary in the process of photosynthesis to
a) Split carbon dioxide
b) Produce ATP and a reducing substance
c) Release energy
d) combine carbon dioxide and water
| Answers | ||
| 1. d) thylakoids | 11. a) H2S | 21. b) stroma |
| 2. b) Melvin Clavin | 12. b) C14 and O16 | 22. b) Green light |
| 3. d) water | 13. d) 14CO2 | 23. d) Hydrogen sulphide |
| 4. a) Grana | 14. b) Red light | 24. b) 1 % |
| 5. c) Visible radiation | 15. a) Black man | 25. b) Produce ATP and a reducing substance |
| 6. b) P 700 | 16. d) Reductive, endergonic and anabolic | |
| 7. a) Mg | 17. c) Green sulphur Bacterium | |
| 8. a) Van Niel | 18. d) J. Ingenhouz | |
| 9. c) 680 nm | 19. a) algae | |
| 10. b) 30 ATP | 20. b) Photolysis of water |
