Match the lists and find the correct option `{:(,I,,II),(a., "Henry Dixon",1,"Bioeletric responeses"),(b.,"Slatyer and Taylor",2.,"Cohesion-tension theory"),(c.,"Lavitt",3,"Active proton concept"),(d.,"J.C. Bose",4., "Water potential"),(,,5.,"Term Physiology") :}`

Options

A. a - 5, b - 2, c - 1, d - 3
B. a - 2, b - 3, c - 4, d - 1
C. a - 5, b - 1, c - 4, d - 2
D. a - 5, b - 1, c - 4, d - 2

Answer

To solve the matching question, we will analyze each scientist and their corresponding contributions to plant physiology.

### Step-by-Step Solution:

1. **Identify the Contribution of Henry Dixon**:
- Henry Dixon, along with John Jolly, developed the **Cohesion-Tension Theory** which explains how water moves through plants due to the cohesive properties of water molecules and the tension created by transpiration.
- **Match**: Henry Dixon → **Cohesion-Tension Theory** (Option II → 2)

2. **Identify the Contribution of Slatyer and Taylor**:
- Slatyer and Taylor are known for coining the term **Water Potential**, which is a measure of the potential energy in water and is crucial for understanding water movement in plants.
- **Match**: Slatyer and Taylor → **Water Potential** (Option B → 4)

3. **Identify the Contribution of Lavitt**:
- Lavitt is associated with the **Active Proton Concept**, which explains the mechanism of stomatal movement, particularly how protons and potassium ions influence guard cell turgidity.
- **Match**: Lavitt → **Active Proton Concept** (Option C → 3)

4. **Identify the Contribution of J.C. Bose**:
- J.C. Bose is known for his work on **Bioelectric Responses** in plants, which involves the study of electrical signals in plant tissues.
- **Match**: J.C. Bose → **Bioelectric Responses** (Option D → 1)

### Final Matches:
- A (Henry Dixon) → 2 (Cohesion-Tension Theory)
- B (Slatyer and Taylor) → 4 (Water Potential)
- C (Lavitt) → 3 (Active Proton Concept)
- D (J.C. Bose) → 1 (Bioelectric Responses)

Thus, the correct answer is: **Option 2**.