The essential and most critical event in sexual reproduction is

Choose the incorrect statement.

What is maintained in organisms through the process of reproduction?

$Arrhenotoky$ is a type of:

Choose the correct options from the following:
$I$. Annual and biennial plants show clear-cut vegetative,reproductive,and senescent phases.
$II$. Bamboo species flower only once in their life,generally after $50-100$ years.
$III$. $Strobilanthus$ $kunthiana$ is a monocarpic plant which flowers only once after $12$ years.

Why is reproduction essential for organisms?