Kinetin (Cytokinin) increase the rate of mitosis by reducing the duration of :-

Options

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

Answer

To solve the question regarding Kinetin (Cytokinin) and its effect on the rate of mitosis, we need to analyze the phases of the cell cycle and determine which phase is reduced in duration by Kinetin.

### Step-by-Step Solution:

1. **Understanding Kinetin (Cytokinin)**: Kinetin is a type of plant hormone known as a cytokinin, which plays a crucial role in cell division and growth.

2. **Identifying the Phases of the Cell Cycle**: The cell cycle consists of several phases:
- Interphase (which includes G1, S, and G2 phases)
- Mitosis (which includes prophase, metaphase, anaphase, and telophase)

3. **Analyzing Interphase**: Interphase is the longest phase of the cell cycle, where the cell grows, replicates its DNA, and prepares for mitosis. If Kinetin reduces the duration of this phase, it would lead to an increase in the rate of mitosis.

4. **Evaluating Other Phases**:
- **Metaphase**: This is a short phase where chromosomes align at the cell's equator. Reducing its duration would not significantly impact the overall rate of mitosis.
- **Anaphase**: This phase involves the separation of chromatids and is also relatively short. Reducing its duration would not increase the overall rate of mitosis.
- **Telophase**: This phase involves the reformation of the nuclear membrane and is also a brief phase in the mitotic process.

5. **Conclusion**: Since Kinetin increases the rate of mitosis by reducing the duration of the longest phase, which is Interphase, the correct answer is that Kinetin reduces the duration of Interphase.

### Final Answer:
Kinetin (Cytokinin) increases the rate of mitosis by reducing the duration of **Interphase**.

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