Answer: Once in 12 years.
- A Once in 12 years
- B a plain single year
- C only every second year
- D some fixed fifty years
Correct answer: A. Once in 12 years
Explanation: Neelakuranji flowers gregariously once every twelve years.
Structure of a mature flower. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Asexual and sexual reproduction, flower anatomy, pollination, fertilization, and seed development.