Multicellular organisms have division of labour. Explain.
Multicellular organisms are composed of many cells. In these organisms, cells vary in their shape, size and activities/functions.
Different cells become specialized to perform specific functions. For instance, the nucleus controls the activities of organelles and plays a major role in heredity. Similarly, all cell organelles perform different but specific functions within the cell.
This specialization where different cells perform different specific functions is called division of labour. It enables multicellular organisms to carry out various complex life processes efficiently and in a coordinated manner.
Explanation
The textbook context explains that multicellular organisms are composed of many cells, and these cells vary in their shape, size and activities/functions. The concept of division of labour can be understood from the fact that different cell organelles perform different but specific functions. The nucleus, for example, controls the activities of organelles and plays a major role in heredity. This specialization at cellular level represents division of labour in multicellular organisms.