Step 1: Concept
Plant roots often undergo modifications to perform specialized functions like respiration, absorption, or support.
Step 2: Meaning
Matching items: Pneumatophores are found in Avicennia (A-II). Velamen roots are found in Vanda (B-I). Stilt roots are characteristic of Maize (C-IV). Haustorial roots are found in parasitic plants like Cuscuta (D-III).
Step 3: Analysis
Comparing this matching (A-II, B-I, C-IV, D-III) with the provided options, it aligns perfectly with Option A.
Step 4: Conclusion
The correct pairing of root modifications to their respective plant examples is A-II, B-I, C-IV, D-III.
Final Answer: (A)