Nuclear membrane and nucleoli are distinctly seen in
(a) Prophase
(b) Metaphase
(c) Anaphase
(d) Interphase

Options

A. Prophase
B. Metaphase
C. Anaphase
D. Interphase

Answer

To determine in which phase the nuclear membrane and nucleoli are distinctly seen, we can analyze the options provided:

1. **Understanding Cell Cycle Phases**:
- The cell cycle consists of two main phases: Interphase and M phase (which includes Prophase, Metaphase, Anaphase, and Telophase).
- Interphase is the phase where the cell is not dividing but is preparing for division. It is often referred to as the resting phase.

2. **Characteristics of Each Phase**:
- **Prophase**: The chromatin condenses into chromosomes, and the nuclear membrane begins to break down. Nucleoli disappear during this phase.
- **Metaphase**: The chromosomes align at the cell's equator. The nuclear membrane is not visible during this phase.
- **Anaphase**: The sister chromatids are pulled apart to opposite poles of the cell. The nuclear membrane is still not present.
- **Interphase**: The nuclear membrane and nucleoli are clearly visible. The chromatin is in a relaxed state, and the cell is preparing for division.

3. **Conclusion**:
- Based on the characteristics of each phase, the nuclear membrane and nucleoli are distinctly seen during **Interphase**.

Thus, the correct answer is **(d) Interphase**.