Stroma lamella in plastid lacks

Options

A. PS II and PS I
B. PS II and NADP reductase
C. PS I and NAD reductase
D. PS II only

Answer

To answer the question "Stroma lamella in plastid lacks," we can follow these steps:

### Step 1: Understand the Structure of Plastids
Plastids are organelles found in plant cells that are involved in the synthesis and storage of food. They contain various structures, including thylakoids, stroma, and grana.

### Step 2: Identify the Components of Stroma Lamella
Stroma lamellae are the regions of the chloroplast that connect the thylakoids. They are involved in the light-dependent reactions of photosynthesis. The stroma lamellae contain proteins and enzymes necessary for photosynthesis.

### Step 3: Determine What is Present in Stroma Lamella
In stroma lamellae, Photosystem I (PSI) and the enzyme NADP reductase are present. PSI is responsible for absorbing light at a wavelength of 700 nm, which is crucial for the photosynthesis process.

### Step 4: Identify What is Lacking in Stroma Lamella
While stroma lamellae contain Photosystem I, they do not contain Photosystem II (PSII). PSII is responsible for absorbing light at a wavelength of 680 nm and is primarily located in the thylakoid membranes.

### Conclusion
Therefore, the stroma lamella in plastids lacks Photosystem II.

### Final Answer
Stroma lamella in plastid lacks Photosystem II.

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