Question

how the leasves propaget?How is it useful for plants?​

Answer 1

Leaf-petiole

Insert the lower end of the petiole into the medium . One or more new plants will form at the base of the petiole. The new plants are then severed from the original leaf-petiole cutting and the cutting may be used once again to produce more plants.

Answer 2

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Cut the stem into pieces so that each cutting has a short piece of stem, a leaf and a bud. Split the stem in two if there are opposite leaves. Dip the base of the cutting in rooting hormone powder or gel. Plant it in the potting mix with the bud just below the surface.