Define cell and justify that division of labour is seen within the cell.

Explanation

**Step-by-Step Solution:**

1. **Definition of Cell:**
A cell is defined as the basic structural, functional, and hereditary unit of all living organisms. It is the smallest unit of life that can replicate independently.

2. **Understanding Division of Labor:**
Within a cell, there are various organelles, each specialized for specific functions. This specialization allows the cell to operate efficiently and effectively.

...