Question

Read the following four statements a, b, c and d and select the right option having both correct statements.
(a) Z-scheme of light reaction takes place in presence of PS I only.
(b) Only PS I is functional in cyclic photophosphorylation.
(c) Cyclic photophosphorylation results into the synthesis of ATP and NADPH.
(d) Stroma lamellae lack PS II as well as NADP.

• A. b and d
• B. a and b
• C. b and c
• D. c and d.

Answer 1

Answer: (A)

b and d

A) Only PS I is involved in cyclic photophosphorylation. So, 'b' is correct. Stroma lamellae have only PS I and they do not have NADP. So, 'd' is correct.
B) Z-scheme of light reaction takes place in presence of both PS I and PS II. So, 'a' is incorrect. 'b' is correct.

C) Cyclic photophosphorylation results in the synthesis of only ATP. So, 'c' is incorrect. 'b' is correct.

D) 'c' is incorrect and 'd' is correct.

So the correct answer is 'b and d'.