$\begin{array}{1 1} \text{a.Lysosomes are double membrane vesicles budded off from Golgi apparatus and contain digestive enzymes.} \\ \text{b. Endoplasmic Reticulum consists of a network of membranous tubules and help in transport, synthesis and secretion.} \\ \text{c. Leucoplasts are bounded by two membranes, lack pigments but contain their own DNA and protein synthesising machinery.} \\ \text{d. Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids.}
\end{array} $
