The enzymes of lysosomes are synthesized on:

Explanation

Lysosomal enzymes are synthesized in the rough endoplasmic reticulum (RER) because it contains ribosomes that are essential for protein synthesis. After synthesis, these enzymes are transported to the Golgi apparatus, where they undergo further processing and are packaged into lysosomes. The smooth endoplasmic reticulum (SER) is not involved in protein synthesis, focusing instead on lipid production and detoxification. Chloroplasts are involved in photosynthesis and not in protein synthesis for lysosomes. The Golgi apparatus is responsible for modifying, sorting, and packaging proteins, not their initial synthesis.