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Many plants can propagate through vegetative propagation that does not use the reproductive parts like seeds and spores; instead use vegetative parts such as stems, leaves, and roots. This is called vegetative propagation. Bryophyllum can propagate through leaves.

The vegetative propagation in plants proceeds through the fusion of vegetative or non-reproductive parts. The root-providing plant is called the stock, while the twig that gets grafted into this stock is called the scion.

Thus, the scion and stalk are not twigs from different plant species.

Therefore, the given statement is false.

The vegetative propagation in plants can occur through various non-reproductive parts. The stock and scions should be from related species.

Thus, the scion and stalk should not come from completely unrelated species.

Therefore, the given statement is false.

The root system that a plant provides for the grafting procedure is called the stalk. The severed ends from two related plants are the stalk and scion, which need to get physically attached to allow vegetative propagation.

Thus, the stalk provides a root system in grafting.

Therefore, the given statement is true.

To perform a successful grafting, the stalk and scion should have compatibility and close relatedness. As grafting is an asexual form of reproduction, one can conclude that the process cannot make new individuals or species.

Thus, grafting does not form new individuals.

Therefore, the given statement is false.