0 a type of leaf that is part of the developing plant inside a seed and either stores food or grows from the seed to produce food -- 子葉（植物種子胚的葉片，可儲藏食物或製造食物）
In four instances, the testa was removed from one end of the seed and the fleshy cotyledons eaten from the centre.
Although cell size in the cotyledons was not significantly lower in the spaceflight material than in the ground control, the cotyledons contained substantially fewer cells.
During the period between radicle emergence and hook formation, relations between cotyledon length and the time from visible germination were linear.
Solubility of axis cell walls differed from solubility of cotyledon cell walls.
Removal of the cotyledons strongly diminished enzymatic activity in the embryonic axis.
There is a concomitant increase in protein reserves which progresses in the same wave-like pattern outward from the cotyledon.
A seedling was considered fully established when two leaves appeared in addition to the green cotyledons.
Seedlings with emerged cotyledons were monitored and removed each time from the pots.
