Part of the leaf modified into tendril in Clematis is
There are various parts of leaf that modifies into tendrils in plants. In plants, either entire leaf, upper leaflets, terminal leaflet, petiole or stipule gets modified into tendril. In wild pea, the entire leaf is modified into tendril. In sweet pea, the upper leaflets modified into tendrils. In Naravelia, the terminal leaflet is modified into tendrils. In Glory lilly, the leaf tip modified into tendril. In Clematis, the petiole is modified into tendril. In Smilax, the stipule is modified into tendril. Thus, the correct answer is 'Petiole.'