Match column I with column II and select the correct option from the codes given below.
`{:("Column I","Column II"),(A." PCT",(i)." Minimum reabsorption"),(B." DCT",(ii)." Filtration of blood"),(C." Loop of Henle",(iii)." Reabsorption of 70-80% electrolytes"),(D." Counter current mechanism",(iv)." Ionic balance"),(E." Renal corpuscle",(v)." Maintenance of concentration gradient in medulla"):}`

Options

A. a) A-(iii),B-(iv),C-(i),D-(v),E-(ii)
B. b) A-(iii),B-(v),C-(iv),D-(ii),E-(i)
C. c) A-(i),B-(iii),C-(ii),D-(v),E-(iv)
D. d) A-(iii),B-(i),C-(iv),D-(v),E-(ii)

Answer

To match the items from Column I with those in Column II, we will analyze each item in Column I and determine the correct corresponding item in Column II based on the functions of each nephron component.

### Step-by-Step Solution:

1. **Identify the function of PCT (Proximal Convoluted Tubule)**:
- The PCT is responsible for the reabsorption of approximately 70-80% of electrolytes and water from the filtrate back into the blood.
- **Match**: PCT → (iii) Reabsorption of 70-80% electrolytes.

2. **Identify the function of DCT (Distal Convoluted Tubule)**:
- The DCT plays a significant role in ionic balance and is involved in the reabsorption of sodium and the secretion of potassium and hydrogen ions, thus maintaining acid-base balance.
- **Match**: DCT → (iv) Ionic balance.

3. **Identify the function of the Loop of Henle**:
- The Loop of Henle is primarily involved in the concentration of urine and reabsorbs a smaller amount of water and electrolytes. It is not primarily known for significant reabsorption but rather for creating a concentration gradient.
- **Match**: Loop of Henle → (i) Minimum reabsorption.

4. **Identify the function of the Counter Current Mechanism**:
- The counter current mechanism is crucial for maintaining the concentration gradient in the renal medulla, which allows for the efficient reabsorption of water in the collecting ducts.
- **Match**: Counter Current Mechanism → (v) Maintenance of concentration gradient in medulla.

5. **Identify the function of the Renal Corpuscle**:
- The renal corpuscle, which consists of the glomerulus and Bowman's capsule, is primarily responsible for the filtration of blood to form urine.
- **Match**: Renal Corpuscle → (ii) Filtration of blood.

### Final Matches:
- A → (iii) Reabsorption of 70-80% electrolytes
- B → (iv) Ionic balance
- C → (i) Minimum reabsorption
- D → (v) Maintenance of concentration gradient in medulla
- E → (ii) Filtration of blood

### Summary of Matches:
- A - iii
- B - iv
- C - i
- D - v
- E - ii