Question

Identify A,B $\&$ C in the above figure ('Z' scheme of light reaction)

• A. a. - PS-I, b.- PS-II, c.-Electron transport system
• B. a. - Pheophytin, b. - Electron transport system, c.-PSI
• C. a. - PS-II, b.-PS-I, c.-Electron transport system
• D. a. - PS-II, b.- Ferredoxin, c.- PS-I

Answer 1

The correct option is C

a. - PS-II, b.-PS-I, c.-Electron transport system

In Non-Cyclic electron transport, both PSII and PSI participate. Electrons released from $H_{2}O$ pass through PSII, the ETS (electron transport system) and PSI and reach $NAD{P}^{+}$. As electron movement is zig-zag it is also known as 'Z' scheme.