Which of the following is an incorrect pair?

Question

$\begin{array}{1 1} (a)\; \text{Nucleus - Brain of the cell} \\ (b)\; \text{Mitochondria - Powerhouse of the cell} \\ (c)\; \text{Chloroplast - Kitchen of the cell} \\ (d)\; \text{Lysosome - Secretory granules} \end{array}$