Question

Match List I with List II

Choose the correct answer from the options given below:

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

Hint:

P = Energy (ATP).
Mg = Green (Chlorophyll).
Mo = Enzyme (Nitrate Reductase).
Zn = Khaira disease.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
The question asks to match specific physiological roles or deficiency diseases with their respective essential plant nutrients.
Detailed Explanation:

• A -- Energy Carrier (II. P):
Phosphorus is the structural component of ATP (Adenosine Triphosphate), the "energy currency" of the cell. It is also found in ADP and NADPH. No metabolic energy transfer is possible without P.

• B -- Constituent of chlorophyll (IV. Mg):
Magnesium is the central atom of the chlorophyll molecule. Without Mg, plants cannot synthesize chlorophyll and thus cannot perform photosynthesis.

• C -- Nitrate reductase (I. MO):
Molybdenum is an essential cofactor for the enzyme nitrate reductase, which is responsible for converting nitrate into nitrite during N-assimilation in plants.

• D -- Khaira disease (III. Zn):
Khaira disease of rice (characterized by rusty brown spots on leaves) is a famous deficiency symptom caused by Zinc deficiency. It was first identified by Y.L. Nene at Pantnagar.

Step 2: Final Answer:
The correct matching is: A-II, B-IV, C-I, D-III.