a stage in embryonic development in certain organisms, specifically referring to the early formative phase before differentiation.

भ्रूण विकास के प्रारंभिक चरण

English Usage: The blastospheric stage is crucial for the development of the embryo in many species.

Hindi Usage: कई प्रजातियों में भ्रूण के विकास के लिए भ्रूण विकास का चरण महत्वपूर्ण है।