In the Z-scheme of light reaction, at how many positions an electron is excited by the light?
1. 1
2. 2
3. 3
4. 4

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 82%
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Spliting of water is associated with-
a. PS II
b. PS I
c. PS I AND PS II
d. outer membrane of thylakoid.

Subtopic:  Light Reactions :3 | Light Reactions |
 86%
From NCERT
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Which of the following statement is incorrect?

1. Electrons to PS-I are provided by PS-II
2. Electrons to PS-II are provided by the splitting of water
3. Electrons to PS-I are provided by the splitting of water
4. PS-II is physically located on the inner side of the membrane of the thylakoid.
Subtopic:  Light Reactions :3 | Light Reactions |
 80%
From NCERT
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Where are the protons and oxygen produced by the splitting of water likely to be released?
a. in the lumen of thylakoid
b. on the outer side of the membrane
c. Both a and b
d. used up in the light reaction

Subtopic:  Light Reactions :3 | Light Reactions |
 59%
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In plant cells ATP is synthesised in-
a. mitochondria
b. chloroplast
c. mitochondria and chloroplast
d. in mitochondria during day and in chloroplasts during night.

Subtopic:  Light Reactions :3 | Light Reactions |
 72%
From NCERT
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Non- cyclic photophosphorylation involves –
a. PS-I
b. PS-II
c. PS-I and PS-II
d. PS-I and LHC.

Subtopic:  Light Reactions :3 | Light Reactions |
 85%
From NCERT
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Where does cyclic photo-phosphorylation takes place?
a. membranous system of chloroplast
b. stroma lamellae
c. grana
d. stroma

Subtopic:  Light Reactions :3 | Light Reactions |
 78%
From NCERT
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Which of the following is present in membrane of stroma lamellae?
a. NADP reductase
b. PS-I
c. PS-II
d. water splitting complex.

Subtopic:  Light Reactions :3 | Light Reactions |
 79%
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If only light of wavelength beyond 680 nm is available then which process will remain continue?
a. cyclic photo-phosphorylation
b. non-cyclic photo-phosphorylation
c. ATP and NADPH
d. evolution of oxygen

Subtopic:  Light Reactions :3 | Light Reactions |
 73%
From NCERT
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Synthesis of ATP from ADP and inorganic phosphate in the presence of light is known as-
a. phosphorylation
b. photo-phosphorylation
c. photorespiration
d. photooxidation.

Subtopic:  Light Reactions :3 | Light Reactions |
 88%
From NCERT
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