Why is interphase also called preparatory phase ?

Explanation

### Step-by-Step Solution:

1. **Definition of Interphase**: Interphase is the phase of the cell cycle where the cell prepares for division. It is not a part of mitosis but is crucial for the cell's readiness to divide.

2. **Components of Interphase**: Interphase consists of three distinct phases:
- **G1 Phase (Gap 1)**: This is the first phase where the cell grows in size, synthesizes RNA, and produces proteins necessary for DNA replication.
- **S Phase (Synthesis)**: During this phase, the cell replicates its DNA, ensuring that each daughter cell will have a complete set of chromosomes.
- **G2 Phase (Gap 2)**: In this final phase of interphase, the cell continues to grow and prepares for mitosis by synthesizing proteins, including those needed for the formation of the spindle apparatus.
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