Modifications of Stem (Explained with Diagram)
1. Stem tendrils: Stem or its branches get modified into green thread like leafless structures called tendrils which are meant for climbing. These may be branched or un-branched. A scale leaf is always present at the point of branching of the tendril. Stem tendrils are of four types: (a) Axillary tendrils-e.g., Passiflora
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