Photochemical phase does not include-
a. water splitting
b. oxygen release
c. CO2 assimilation
d. light absorption

Subtopic:  Light Reactions :1 | Light Reactions |
 80%
From NCERT
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Which of the following statement is incorrect?
a. Reaction centre is formed by a group of chl- a molecules.
b. Reaction centre is different in both the photosystems.
c. In PS I the reaction centre chlorophyll a has an absorption peak at 700 nm.
d. In PS II the reaction centre chlorophyll a has absorption maxima at 680 nm.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 60%
From NCERT
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In photosystem-I, P700 refers to-
1. chl-b
2. chl-a
3. number of pigment molecules
4. absorption peak of chl-a at 700nm.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 80%
From NCERT
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Light harvesting complexes are made up of-
1. proteins
2. pigments
3. protein and pigments
4. proteins and lipids.

Subtopic:  Light Reactions :1 | Light Reactions |
 73%
From NCERT
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In chloroplast the movement of electrons from PS-II to electron transport system is-
1. uphill in terms of redox potential scale.
2. downhill in terms of redox potential scale.
3. from one cytochrome to another
4. None of the above.

Subtopic:  Light Reactions :2 | Light Reactions :3 | Light Reactions |
 61%
From NCERT
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Electrons in the reaction center of PS-I are excited by-
a. blue light
b. red light
c. green light
d. blue and red light.

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 50%
From NCERT
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Final acceptor in the Z-scheme of light reaction-
1. oxygen
2. NADPH
3. NADP+
4. ferredoxin

Subtopic:  Light Reactions :1 | Light Reactions :2 | Light Reactions |
 68%
From NCERT
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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%
From NCERT
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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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