Question

Cells consist of many organelles, yet we do not call any of these organelles as structural and functional unit of living organisms. Explain. 

Answer 1

The cell organelles like mitochondria, Golgi complex, ribosomes, nucleus, etc., have specific functions and carry out specific functions in a cell but they cannot be called the structural and functional units of living organisms.

This is because they can function only when present inside a living cell. They cannot act as independent units. The CEI, on the contrary has independent existence. It is the smallest structural and functional unit of life.