Budding is a kind of asexual reproduction in which a single parent is involved that forms a bud from a small part of its body that later gets detached from its parent's body to develop into a new organism. Both Hydra and Yeast reproduce by budding.

Regeneration is a process in which the damaged or missing cells, tissues, organs and even entire body parts are replaced or restored naturally. All the species have the capability of regeneration. For example- Hydra and the planarian tapeworm have great regenerative ability.

Grafting is one of the artificial vegetative propagation methods in which two plants are joined into one. In this process, a wound is created on one of the plants (stock) and the other (scion) is inserted into that wound so that each plant's tissues can grow together. It is the fastest way of growing popular and desirable varieties of fruiting and flowering trees.

Zygote is formed after the process of fertilization in which a haploid male gamete (sperm) fuses with a haploid female gamete (egg cell). The diploid zygote is formed inside the ovule which is present inside the ovary. The single-celled zygote undergoes repeated mitotic divisions to form an embryo.