Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Photosynthesis

16. The process of Photosynthesis is
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
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
Learn more:  MCQ on Photosynthesis (Questions 1- 15)

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