(a)Elaioplasts : These are a kind of leucoplasts which are involved in storage of oils and fats.
(b)Centrioles : Centrioles form the basal body of cilia or flagella and spindle fibres that give rise to spindle apparatus during cell division in animal cells.
(c)Mesosome : It is formed by extension of plasma membrane into the cell, which help in cell wall formation, DNA replication and distribution of daughter cells.
(d)Lysosome : They are formed by the process of packaging in golgi apparatus. They help in intracellular digestion, extracellular digestion, body defence, autophagy etc.