The question asks for the identification of a personality notable for pioneering both radio science and Bengali science fiction. Additionally, this individual invented the crescograph, a device that measures plant growth. Let's explore the given options:
- Homi Bhabha: Known as the father of Indian nuclear program, not associated with radio science or the crescograph.
- Jagadish Chanddra Bose: A renowned polymath who notably contributed to the fields of radio and plant physiology. He invented the crescograph and is also credited with pioneering in Bengali science fiction.
- CV Raman: Known for discovering the Raman Effect, not related to the invention of the crescograph or science fiction literature.
- Govind Khurana: Recognized for his work in genetics and DNA synthesis, with no known contributions to radio science or plant growth measurement.
Based on the information above, the personality who fits all the criteria is Jagadish Chanddra Bose.