- egg yolk
- seed endosperm
- cotyledon reserves
- maternal cytoplasm
- placental transfer
- milk
- brood provisions
Operational definition
Storage-function category.
Matter and chemical free energy packaged into an embryo, seed, egg, spore, cyst, or other propagule to support survival and development before autonomous resource acquisition is sufficient.
Examples include:
- yolk;
- endosperm;
- cotyledon reserves;
- maternal cytoplasm;
- brood provisions.
These are reserves defined by recipient and developmental purpose.