$A$ single cell containing a large number of nuclei is called:

Match the description (given in Column $I$) with the correct stage (given in Column $II$) and choose the correct option.

Column $I$	Column $II$
$A$. Chromosomes are moved to spindle equator	$I$. Pachytene
$B$. Centromere splits and chromatids move apart	$II$. Zygotene
$C$. Pairing between homologous chromosomes takes place	$III$. Anaphase
$D$. Crossing over between homologous chromosomes	$IV$. Metaphase

Select the correct option:
$(1)$ In animal cells,cytokinesis occurs by cell plate / cell furrow.
$(2)$ Mitosis occurs only in somatic cells / both somatic and germ cells.

Normally a somatic cell in human beings contains . . . . . . number of chromosomes.

Choose the correct sequence of two main events in mitosis.

Select the correct option by matching Column $I$ with Column $II$.

Column $I$	Column $II$
$A$. Synapsis aligns homologous chromosomes	$(i)$ Anaphase $II$
$B$. Synthesis of $RNA$ and protein	$(ii)$ Zygotene
$C$. Action of enzyme recombinase	$(iii)$ $G_2$ phase
$D$. Centromeres do not separate but chromatids move towards opposite poles	$(iv)$ Anaphase $I$
	$(v)$ Pachytene