In the seeds of cereals such as maize, a distinct layer separates the embryo from the endosperm. Which of the following accurately describes the biochemical nature and anatomical role of this layer?

Step-by-step solution

In monocotyledonous seeds like maize, the seed coat is membranous and generally fused with the fruit wall. The endosperm is bulky and stores food. The outer covering of the endosperm separates the embryo by a proteinaceous layer called the aleurone layer. Therefore, the layer separating the embryo from the endosperm is proteinaceous in nature and forms the outer covering of the endosperm, not the entire seed or seed coat. Answer: It is a proteinaceous layer forming the outer covering of the endosperm.