A. Velamen roots are characteristic of epiphytic orchids like {Vanda}, not Pisum – so incorrect if matched with III. B. Axillary buds develop into tendrils in watermelon – B matches I. C. In {Agave}, floral buds act as a storage organ – C matches IV. D. In {Eichhornia}, the swollen petiole aids buoyancy – D matches II.