Define : a) Juvenile phase, b) Reproductive phase.

Explanation

a) All organisms have to reach a certain stage of growth and Maturity in their life, before they can reproduce sexually and this storage is known as Juvenile stage or vegetative phase.
b) The stage which occurs after the Juvenile stage, which can be seen easily in the higher plants when they came to flower is called Reproductive phase. In this, reproduction occurs either by asexual or by sexual means produce offsprings.