Answer:
Asexual reproduction
Step-by-step explanation:
- Asexual reproduction is not a common trait amongst most animals
- This type of reproduction is done mostly by simple organisms like bacteria.
- Most animals do have a fixed body plan composed of an ectoderm, endoderm and mesoderm
- Specialized tissues are organs - these are common in most animals
- Most animals main source of nutrition is heterotrophy ( eating other organisms in order to get their energy)