How do these organisms asexually reproduce?

(a) Spirogyra, (b) Planaria.

1. Asexual reproduction is the type of reproduction in which a single and less organized organism reproduce to form their new progeny. Some types of asexual reproduction are; budding, fragmentation and regeneration.
2. Spirogyra is free-floating filamentous green algae that belong to the class Chlorophyta. It reproduces asexually by fragmentation.
3. Planaria is a free-floating flatworm that belongs to the class Turbellaria. This organism reproduces asexually by regeneration.