Assertion. Phase of cell division is also known as formative phase.
Reason. In Formative phase new cells are produced from pre-existing cells through meiosis.

Options

A. if both are true with reason being correct explanation
B. both true but reason not correct explanation
C. assertion true but reason wrong
D. both are wrong.

Answer

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Understand the Assertion
The assertion states: "Phase of cell division is also known as formative phase."
- **Explanation**: The formative phase refers to the stage in which cells undergo division to produce new cells. This is a correct statement as cell division is indeed a formative process in the life cycle of cells.

### Step 2: Understand the Reason
The reason states: "In formative phase new cells are produced from pre-existing cells through meiosis."
- **Explanation**: While it is true that new cells are produced from pre-existing cells, the process mentioned here is incorrect. New cells in the formative phase are produced through mitosis, not meiosis. Mitosis is the process of cell division that results in two identical daughter cells, while meiosis is a type of cell division that reduces the chromosome number by half and is involved in the production of gametes.

### Step 3: Conclusion
- **Assertion**: True (the phase of cell division is known as the formative phase).
- **Reason**: False (new cells are produced through mitosis, not meiosis).

### Final Answer
The assertion is correct, but the reason is incorrect. Therefore, the correct option is that the assertion is true, but the reason is false.

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