During telophase, the nuclear membrane re-forms around each set of chromosomes, and a nucleolus reappears in each new nucleus. Additionally, the chromatin begins to decondense and the nucleoli reappear. Therefore, the structures that reappear during telophase are:

• Nuclear membrane: The nuclear envelope breaks down during mitosis, but re-forms around each set of chromosomes during telophase.

• Nucleolus: The nucleolus, a part of the nucleus where ribosomes are made, disappears during mitosis, but reappears in each new nucleus during telophase.