Step 1: Concept
Mineral nutrition involves specific elements playing crucial roles in plant physiological and metabolic processes.
Step 2: Meaning
Matching the roles:
I. Meristematic tissue requires Nitrogen (D).
II. Enzyme activators for respiration and photosynthesis include Magnesium (A).
III. Iron (E) is involved in electron transfer from Ferredoxin and cytochrome.
IV. Manganese (B) acts as an activator of the IAA oxidative enzyme.
Step 3: Analysis
By correctly pairing each item: I-D, II-A, III-E, and IV-B, we find that Option (A) is the only correct sequence.
Step 4: Conclusion
The correct match is I-D, II-A, III-E, IV-B.
Final Answer: (A)