Lysosomes: They are single- membrane small vesicular structures, found in the cytoplasm of all eukaryotic cells, except mammalian RBC’s. They contain enzymes and are formed by Golgi apparatus.
Functions: They are involved in intracellular digestion of foreign food or microbes and are also involved in autolysis or self-digestion of cells, after their death.
Peroxisomes: They are found in photosynthetic cells of plants, liver and kidney cells of the vertebrates and contain two types of oxidative enzymes: oxidase and catalase, bounded by a unit membrane.
Functions: These are involved in the removal of toxic substances, by oxidative reactions. In plant cells, these also help in photorespiration.
Centrosome: A centrosome is a light microscopic organelle, formed of two dark, coloured granules called centrioles, surrounded by a transparent cytoplasmic area called centrosphere. It lies near the nucleus and is commonly called the call centre.
Functions: Centrosome helps in cell division, in animal cells. They also help in the formation of cilia and flagella of the cells.