Concept: Metamorphosis refers to a dramatic change in body form and structure during an organism’s life cycle.
Explanation:Metamorphosis is seen in insects like butterflies and beetles, and in amphibians like frogs.
It involves distinct stages such as egg, larva, pupa, and adult.
The organism undergoes a clear transformation in form and structure between these stages.
This process is not simply growth from a zygote, nor regeneration of lost parts, nor a change from adult back to larva.
Answer: B. The change in form and structure during the life cycle of certain organisms.