Read the following four statement A,B,C and D and select the right opition having both correct statements.
statements
(a) Z scheme of light raction takes place in presence of PS I only .
(B ) Omly PS I is functional in cyclic photosporylation
(c ) Cyclic photophosphorylation results into synthesis of ATP and `NADPH_(2)`
(D ) Stroma lamllae lack PSII as welll as NADP

Options

A. B and D
B. A and B
C. B and C
D. C and D

Answer

To solve the question, we need to analyze each statement (A, B, C, D) regarding photosynthesis and identify which two statements are correct.

### Step-by-Step Solution:

1. **Analyze Statement A**:
- Statement A claims that the Z scheme of light reaction takes place in the presence of PS I only.
- This statement is **false** because the Z scheme involves both Photosystem I (PS I) and Photosystem II (PS II). The Z scheme describes the flow of electrons during non-cyclic photophosphorylation, which requires both photosystems.

2. **Analyze Statement B**:
- Statement B states that only PS I is functional in cyclic photophosphorylation.
- This statement is **true**. In cyclic photophosphorylation, only Photosystem I is involved, and it generates ATP without the production of NADPH.

3. **Analyze Statement C**:
- Statement C claims that cyclic photophosphorylation results in the synthesis of ATP and NADPH2.
- This statement is **false** because cyclic photophosphorylation only produces ATP and does not produce NADPH. NADPH is generated during non-cyclic photophosphorylation.

4. **Analyze Statement D**:
- Statement D states that stroma lamellae lack PS II as well as NADP.
- This statement is **true**. The stroma lamellae primarily contain Photosystem I and do not have Photosystem II or NADP.

### Conclusion:
Based on the analysis:
- Statements B and D are correct.
- The correct option having both correct statements is B and D.

### Final Answer:
The right option having both correct statements is **B and D**.