Question

Why are budding, fragmentation and regeneration all considered as asexual types of reproduction? With neat diagrams explain the process of regeneration in Planaria.

Answer 1

1. Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes.
2. Asexual reproduction is the primary form of reproduction for single-celled organisms
3. example: archaea and bacteria.
4. In Budding, fragmentation and regeneration only a single parent is involved and there is no formation of gametes hence they are considered as asexual types of reproduction.
5. In the given figure the planaria body is cut into 3 pieces which regenerates into 3 individual cells and each piece has the ability to grow into a new organism.