Which one of the following is not included under the endomembrane system?

The contribution of cytoplasmic $DNA$ in cells to total $DNA$ is

Column $-I$ represents scientists and Column $-II$ represents their discoveries. Choose the correct option:

Column $-I$	Column $-II$
$(A)$ Robert Hooke	$(i)$ Cell Theory
$(B)$ Robert Brown	$(ii)$ Golgi apparatus
$(C)$ Schleiden and Schwann	$(iii)$ Cell
$(D)$ Camillo Golgi	$(iv)$ Nucleus

Identify the labels $A, B, C, D$ and $E$ in the given diagram. The following components are listed:
$(i)$ $SER$
$(ii)$ Ribosome
$(iii)$ Nucleus
$(iv)$ Nuclear pore
$(v)$ $RER$

Plant cells differ from animal cells because of:

Which type of microscope is useful for studying the shape of a cell in motion?