1. The preformation of the abscission zone is still present in all lateral buds during bud dormancy.

2. Animalcule An obsolete, nonspecific term for: (1) Any microscopic organism; (2) Any “core” organism of the now-discarded preformation theory.

3. 3 The early nineteenth century saw major developments in embryology, which challenged the mechanical concept of generation and overthrew the preformation theory.