Match the sites in column-I with process column-II and choose the correct combination b: -
`{:("Column I","Column II"),("A Grana of chloroplast","I light reaction"),("B Mitochondrial matrix","II dark reaction"),("C Cytoplasm of cell","III kreb's cycle"),("D Stroma of chloroplast " ,"IV EMP pathway"):}`

Options

A. A - II , B - III, C - IV , D - I
B. A - I , B - III, C - IV , D - II
C. A - IV , B - III, C - I , D - II
D. A - I , B - IV, C - III , D - II

Answer

To solve the question, we need to match the sites in Column I with the processes in Column II. Let's analyze each option step by step:

### Step 1: Analyze Column I
1. **Grana of chloroplast**: Grana are stacks of thylakoids in chloroplasts where the light-dependent reactions of photosynthesis occur.
2. **Mitochondrial matrix**: This is the innermost compartment of mitochondria where the Krebs cycle (also known as the citric acid cycle) takes place.
3. **Cytoplasm of cell**: The cytoplasm is where the Embden-Meyerhof-Parnas (EMP) pathway, which is a part of glycolysis, occurs.
4. **Stroma of chloroplast**: The stroma is the fluid-filled space in chloroplasts where the light-independent reactions (Calvin cycle or dark reactions) occur.

### Step 2: Analyze Column II
- **I. Light reaction**: This corresponds to the reactions that occur in the thylakoids (Grana) of chloroplasts.
- **II. Dark reaction**: This corresponds to the reactions that occur in the stroma of chloroplasts.
- **III. Krebs cycle**: This corresponds to the reactions that occur in the mitochondrial matrix.
- **IV. EMP pathway**: This corresponds to the reactions that occur in the cytoplasm of the cell.

### Step 3: Match the Columns
Now we can match the items from Column I to Column II:
- **A (Grana of chloroplast)** matches with **I (Light reaction)**.
- **B (Mitochondrial matrix)** matches with **III (Krebs cycle)**.
- **C (Cytoplasm of cell)** matches with **IV (EMP pathway)**.
- **D (Stroma of chloroplast)** matches with **II (Dark reaction)**.

### Final Matching
- A → I
- B → III
- C → IV
- D → II

### Conclusion
The correct combination is:
- A matches with I
- B matches with III
- C matches with IV
- D matches with II