Which structure is the only food source for a developing monocot embryo?

Question

Quizplus · Accepted Answer

Monocot embryos rely on the endosperm as their sole source of nutrition during development. The cotyledon in monocots tends to be small and stores little to no nutrients, unlike in dicots where the cotyledons serve as a food source for the developing embryo. The radicle, epicotyl, and hypocotyl are all embryonic plant structures that aid in seedling development, but they are not the primary food source for the embryo.

Which Structure Is the Only Food Source for a Developing