Question

which of the following is not applicable to the given figure​

Answer 1

(4) Usually this process occurs in the thylakoid which lack NADP reductase rnzyme

Answer 2

Answer:

Correct option - (4) Usually this process occurs in the thylakoid which lacks NADP reductase enzyme.

Explanation:

The given diagram shows the process of cyclic phosphorylation. In this process only photosystem-I (PS-I) functions. The electrons are cycled within the photosystem and this results in phosphorylation. ATP is produced during phosphorylation. This process results in the formation of ATP but not in the synthesis of NADPH and H+. Non-cyclic phosphorylation results in the synthesis of ATP as well as NADPH and H+.

Cyclic phosphorylation occurs when the light of wavelength beyond 680 nm is available for excitation. The process results in the formation of one oxygen molecule using two water molecules.

$2H_{2} O ----------- 4H^{+} +O_{2} + 4e^{-}$

This process doesn't occur in thylakoids. It occurs in the stroma lamellae that lack NADP reductase enzyme.