What are the other parts of plants that can be used to grow and reproduce another plant aside from roots and seeds

The other parts of the plant that can grow is a leaf not sure is it can reproduce though

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for