What does the $Oestrous$ cycle indicate?

Which of the following organisms has the longest lifespan?

Assertion: Clones are produced by sexual reproduction.
Reason: These are prepared by a group of cells descended from many cells or by inbreeding of a heterozygous line.

Identify the mismatched pair with respect to reproduction.

Choose the incorrect sentence.

$A$: 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.