Answer:

Although cell organelles have specific structures and perform specific functions but they cannot be called structural and functional units of living organisms. This is so because they can perform their functions only when they are within a living cell. They cannot function outside the cell as an independent unit.

Answer:

Cell organelles have their specific structure and they too perform specific functions but they cannot be called as structural and functional units of living organisms.

They cannot function outside the cell as an independent unit.