(a) A newly formed lysosome containing hydrolytic enzymes is called primary lysosome. Secondary lysosome contains hydrolytic enzymes and some digestible material. A secondary lysosome, after digestion of matter. Contains indigestible matter. Such a lysosome is called residual body.
At times, primary lysosome fuses with damaged or unwanted organelles, forming a large sac called autophagic vacuole.
(b) Lysosome arise from the Golgi complex.
(c) Three kinds of plant lysosomes are spherosomes, aleurone grain and vacuoles. These also contain reverse food materials.
