Study the given graph showing the effect of light intensity on the rate of photosynthesis. Which of the following statements regarding this is correct?
Important Questions on Photosynthesis in Higher Plants
The NADP reductase is
(i) Located on the stroma side of thylakoid membrane.
(ii) Associated with non-cyclic photophosphorylation.
(iii) Associated with PS I.
Read the following statements and state them as true (T) and false (F).
A. A photosystem consists of a reaction center, LHC, and an electron acceptor.
B. The final acceptor of electrons during the non-cyclic flow of electrons is NADP.
C. During phosphorylation, the chloroplast stroma becomes more acidic than the interior of the thylakoid membrane.
D. The cytochrome system transports electrons and pumps H+ from stroma to thylakoid membrane.
(i) is involved in non-cyclic photophosphorylation only.
(ii) is involved in both cyclic and non-cyclic photophosphorylation.
(iii) Stroma lamellae membranes possess only, whereas grana lamellae membranes possess both and .
Select the correct identification for and .
How many of the given statements is/are correct for cyclic phosphorylation?
(I) Only PS I is functional.
(II) Occurs in stroma lamellae.
(III) Occurs when only light of wavelength less than 680 nm is available for excitation.
(IV) Synthesis of both ATP and NADPH occurs.
(V) Electrons are circulated within the photosystem.
