Match the following columns correctly.

Column-$I$	Column-$II$
$(a)$ Membrane-bound organelle	$(p)$ Ribosomes
$(b)$ Non-membrane-bound organelle	$(q)$ Mitochondria
$(c)$ Largest cell	$(r)$ Mycoplasma
$(d)$ Smallest cell	$(s)$ Ostrich egg

$A$ $1 \ ml$ pipette can contain about

Which of the following statements are correct?

Non-membranous cell organelles are

The magnification power of a light compound microscope depends on .........

Which of the following statements are incorrect?
$(i)$ Plant cells have centrioles which are absent in almost all animal cells.
$(ii)$ Ribosomes are the site of protein synthesis.
$(iii)$ The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.
$(iv)$ In animal cells, steroidal hormones are synthesized by smooth endoplasmic reticulum.
Of the above statements: