Match the following.

Column-$I$	Column-$II$
$a$. Cristae	$i$. Flattened membrane sacs like structure present in stroma
$b$. Cisternae	$ii$. Infolding of mitochondria
$c$. Thylakoids	$iii$. Disc-shaped sacs
$d$. Kinetochores	$iv$. Disc-shaped structure present in chromosome

Which of the following cells possesses only a single outer membrane?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Plant cell wall	$(P)$ Protein
$(2)$ Bacterial cell wall	$(Q)$ Cellulose
$(3)$ Fungal cell wall	$(R)$ Amino sugars (Peptidoglycan)
$(4)$ Viral capsid	$(S)$ Chitin

Read the following statements carefully:
$(A)$ Lipid component of the plasma membrane mainly consists of phosphoglycerides.
$(B)$ Polar molecules can pass through the lipid bilayer of plasma membrane,therefore they do not require carrier proteins to facilitate their transport.
$(C)$ Secondary wall is capable of growth and it is formed on the outer side of the cell.
$(D)$ Quasifluid nature of lipid enables lateral movement of proteins within the overall lipid bilayer of plasma membrane.
$(E)$ Middle lamella glues the different neighbouring cells together.
How many statements are incorrect?

Which of the following structures between two adjacent cells forms an effective transport pathway?

Microsomes are obtained by . . . . . . .