Which ot the following is not correctly matches a phase of the cell cycle with its function ?

Options

A. Second gap phase -Period of cytoplasmic growth
B. First gap phase - Most of the organelle duplication
C. Interphase - Phase of preparation for cell division
D. DNA synthesis phase - Doubling of number of chromosome in cell

Answer

To determine which phase of the cell cycle is not correctly matched with its function, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding the Cell Cycle Phases**:
- The cell cycle consists of several phases: G1 (First Gap), S (Synthesis), G2 (Second Gap), and M (Mitosis).

2. **Analyzing Each Option**:
- **Option 1**: G2 Phase - "Period of cytoplasmic growth".
- This is correct. The G2 phase is indeed associated with cytoplasmic growth and organelle duplication, along with checkpoints to ensure everything is ready for division.

- **Option 2**: G1 Phase - "Most of the organelles duplicate".
- This is incorrect. While the G1 phase is a period of growth and metabolic activity, the majority of organelle duplication occurs in the G2 phase. In G1, the cell grows and synthesizes necessary components, but organelle duplication is not the primary function.

- **Option 3**: Interphase - "Phase of preparation for cell division".
- This is correct. Interphase includes G1, S, and G2 phases, during which the cell prepares for division.

- **Option 4**: S Phase - "DNA synthesis phase which doubles the number of chromosomes".
- This is correct. During the S phase, DNA is replicated, effectively doubling the number of chromosomes in preparation for mitosis.

3. **Conclusion**:
- The option that is not correctly matched with its function is **Option 2**, which states that the G1 phase is when most organelles duplicate. This is inaccurate as organelle duplication primarily occurs in the G2 phase.

### Final Answer:
**Option 2** is not correctly matched with its function.

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