In what organisms and how is asexual reproduction carried out?

The essence of asexual reproduction is that an organism recreates a new organism from itself. DNA in the parent organism and in the offspring organism is identical, except in cases where a failure or mutation has occurred. Asexual reproduction is characteristic of most bacteria, unicellular animals and unicellular plants. Unicellular organisms generally divide in half or reproduce by budding. Plants can multiply by spores. Some organisms, such as hydra, can multiply by separating part of their body and then regenerating.