1. Papaya Roundup ready → Herbicide tolerant (Z).
2. Tomato → Fungal pathogen resistant (B), pathogen X → Pseudomonas.
3. Potato → Bacterial pathogen resistant (C), pathogen Y → Phytophthora.
4. Soyabean → Papaya ring spot resistance (D), pathogen W → Virus.
5. Correct matching is (1) I-A-Z, II-B-Y, III-C-X, IV-D-W.