Which of the following structures is the functional unit in a Golgi complex?

✅ Explanation:
Camillo Golgi (1898) first observed densely stained reticular structures near the nucleus. These were later named Golgi bodies after him.
They consist of many flat, disc-shaped sacs or cisternae of 0.5μm to 1.0μm diameter.
These are stacked parallel to each other. A varied number of cisternae are present in a Golgi complex.
The Cisternae is the functional unit in a Golgi complex
The Golgi cisternae are concentrically arranged near the nucleus with distinct convex cis or the forming face and concave trans or the maturing face.
The cis and the trans faces of the organelle are entirely different but interconnected.
The Golgi apparatus principally performs the function of packaging materials, to be delivered either to the intracellular targets or secreted outside the cell.
Materials to be packaged in the form of vesicles from the ER fuse with the cis face of the Golgi apparatus and move towards the maturing face.

🔴 Additional Information:Thylakoid:
Membrane-bound compartments inside chloroplasts and cyanobacteria.
Site of the light-dependent reactions of photosynthesis.

• Cristae:
Found in mitochondria, a double-layered cell organelle.
The outer layer is porous, and the inner layer is folded upon itself, forming cristae.
Cristae increase the surface area.

• Archoplasm:
The protoplasmic material surrounding the centrosome is called archoplasm.