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

Spliting of water is associated with-
a. PS II
b. PS I
c. PS I AND PS II
d. outer membrane of thylakoid.

Which of the following statement is incorrect?

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

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.

Non- cyclic photophosphorylation involves –
a. PS-I
b. PS-II
c. PS-I and PS-II
d. PS-I and LHC.

Where does cyclic photo-phosphorylation takes place?
a. membranous system of chloroplast
b. stroma lamellae
c. grana
d. stroma

Which of the following is present in membrane of stroma lamellae?
a. NADP reductase
b. PS-I
c. PS-II
d. water splitting complex.

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

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.