The persistent nucellus in the seeds of some plants is called EndospermPerispermScutellumPericarp

To answer your question, we need to identify the correct term that refers to the persistent nucellus in the seeds of some plants. Here is a detailed analysis of the options provided:

1. Endosperm: This is the tissue that surrounds the embryo in the seeds of flowering plants and provides nourishment during germination. It develops from the fertilization of the polar nuclei and is not directly related to the persistent nucellus.

2. Perisperm: This is a type of seed tissue that is formed from the nucellus and can persist in some seeds. It serves as a food reserve and can be considered as the answer to your question.

3. Scutellum: This is part of the seed, specifically in monocots like grasses (e.g., the oat and corn seeds). It does not refer to the nucellus itself but rather aids in the absorption of nutrients from the endosperm.

4. Pericarp: This refers to the outer layer of the fruit that develops from the ovary wall after fertilization. It is not related to the seed's internal structures.

Given this analysis, the correct option that refers to the persistent nucellus in the seeds of some plants is Perisperm.