In photosystem-I, P700 refers to-
a. chl-b
b. chl-a
c. number of pigment molecules
d. absorption peak of chl-a at 700nm.

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Light harvesting complexes are made up of-
a. proteins
b. pigments
c. protein and pigments
d. proteins and lipids.

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In chloroplast the movement of electrons from PS-II to electron transport system is-
a. uphill in terms of redox potential scale.
b. downhill in terms of redox potential scale.
c. from one cytochrome to another
d. None of the above.

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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.

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Final acceptor in the Z-scheme of light reaction-
a. oxygen
b. NADPH
c. NADP+
d. ferredoxin

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

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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.

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Which of the following statement is incorrect?
a. Electrons to PS-I are provided by PS-II
b. Electrons to PS-II are provided by splitting of water
c. Electrons to PS-I are provided by splitting of water
d. PS-II is physically located on the inner side of the membrane of thylakoid.

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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

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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.

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