Which of the following is a method of reproduction?

'Gemmule formation is a common mode of reproduction in Paramecium'

Which of the following is not immortal?

Match the following columns and select the correct option:

Column-$I$	Column-$II$
$(a)$ Unisexual	$(1)$ Ovum
$(b)$ Bisexual	$(2)$ Syngamy
$(c)$ Fertilization	$(3)$ Monoecious
$(d)$ Female gamete	$(4)$ Dioecious

$A$: Zygote is the first cell of the new generation in all sexually reproducing organisms.
$R$: Cell division and cell differentiation are the stages of embryogenesis.

$A$ bacterial cell divides every minute. It takes one hour to fill up a cup. How much time will it take to fill half the cup?