In the seeds of beet, a nutritive tissue known as perisperm is observed. Anatomically, this tissue represents the:

Step-by-step solution

In some seeds such as black pepper and beet, remnants of the nucellus are also persistent. This residual, persistent nucellus is called the perisperm. It is distinct from the endosperm, which develops from the primary endosperm nucleus, and the seed coat, which develops from the integuments. The synergids degenerate after fertilization. Answer: persistent remnants of the nucellus