Biology · Embryonic Development
मानव भ्रूणीय विकास के दौरान निम्नलिखित में से कौन सा अंग सबसे पहले बनता है और कार्यात्मक होता है?
- 1मस्तिष्क
- 2त्वचा
- 3तंत्रिका नली (न्यूरल ट्यूब)
- 4हृदय✓
सही उत्तर देखें
हृदय
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