Texas FFA Nursery Landscape Practice Exam

Which of the following serves as a food reservoir for the developing embryo within the seed of a monocot?

1. A. Plumule

2. B. Radical

3. C. Testa

4. D. Endosperm

The correct answer is: D. Endosperm

The endosperm serves as a crucial food reservoir for the developing embryo within the seed of a monocot. In monocot seeds, such as those of grasses, the endosperm is typically rich in starches, proteins, and other nutrients that support the growth of the embryo once the seed germinates. This storage tissue provides the necessary energy and nutrients needed during the early stages of development, before the seedling can begin photosynthesis and obtain nutrients from the soil. While the plumule and radicle (radical refers to the root) are essential parts of the young plant, with the plumule developing into the shoot and leaves and the radicle forming the root system, they do not serve as food reservoirs. The testa, or seed coat, primarily protects the seed rather than providing nutritional support.