Which of the following is an incorrect pair?

Select the correct option for the following matches:

Column-$I$	Column-$II$
$(1)$ Mesosome	$(a)$ Not a component of the endomembrane system
$(2)$ Peroxisome	$(b)$ Many ribosomes associated with a single $m-RNA$
$(3)$ Polysome	$(c)$ Single membrane-bound system
$(4)$ Lysosome	$(d)$ Infoldings of the cell membrane

In which of the following are cisternae found?

Eukaryotic cells have organelles which may:
$(a)$ not be bound by a membrane
$(b)$ be bound by a single membrane
$(c)$ be bound by a double membrane
Group the various sub-cellular organelles into these three categories.

Mark the mismatched pair.

Match the following columns:

Column-$I$ (Cell)	Column-$II$ (Number of Nuclei)
$P$. Sieve tube element	$I$. Binucleate
$Q$. Paramecium	$II$. Uninucleate
$R$. Typical cell	$III$. Enucleated
$S$. Skeletal muscle cell	$IV$. Multinucleate