All of the following are membrane bound organelles except
Mitochondria are a double membrane organelle. Its inner membrane shows presence of finger-like projections called as cristae. This folded structure increases the surface area for chemical reactions.
Lysosomes are membrane bound cellular organelles. They possess many hydrolytic enzymes for the digestion of cellular waste, debris as engulfed, killed viruses or bacteria. When cell is in a metabolic crisis then lysosomes digest its own cell or cellular components by releasing enzymes.
Sphaerosomes are the lipid bodies, that stores triacylglycerol in the form of oil. They are surrounded by single line membrane. They are responsible for synthesis of cuticle and wax.
Ribosomes lacks membrane and is involved in protein synthesis.
So, the correct answer is option C.