Question

neelakarungi flowers once in 12 years because of its large juvenile phase?

and what happens in bamboo, why does it flower once in a life time?

Answer 1

Bamboo also has long juvenile phase or vegetative phase . The difference between Neelakarungi and bamboo is that Neelakarungi flowers many times in a lifetime and so called polycarpic, but bamboo flowers once in their life time and so called monocarpic.