During meiosis,how many cells are formed from a single cell?

$A$ bivalent of meiosis $I$ consists of

The homologous chromosomes follow the process of synapsis in the stage or Pairing of homologous chromosomes takes place in:

Match the following stages of meiosis with their respective events:

List-$I$	List-$II$
$a$. Zygotene	$i$. Terminalization
$b$. Pachytene	$ii$. Chiasmata
$c$. Diplotene	$iii$. Crossing over
$d$. Diakinesis	$iv$. Synapsis

Select the correct option: $a \quad b \quad c \quad d$

What is the number of chromatids in a bivalent of homologous chromosomes during synapsis?

Arrange the following events of meiosis in the correct sequence:
$(i)$ Crossing over
$(ii)$ Synapsis
$(iii)$ Terminalisation of chiasmata
$(iv)$ Disappearance of nucleolus