Answer: Cotyledon.
Step-by-step explanation:
Cotyledon is a part of the seed embryo and it is defined as the embryonic leaf or first leaf that first germinate in angiosperms . It is formed within the endosperm of the seed and it serve as energy storage or source of energy to provide initial growth for the plants.
There are two types of cotyledon, monocotyledon and dicotyledon.
Monocotyledon have single cotyledon while dicotyledon have two cotyledon.