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प्रश्न
When and how does placenta develop in female?
अति संक्षिप्त उत्तर
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उत्तर
After implantation, the trophoblast forms chorionic villi that grow into the uterine endometrium. The maternal endometrial tissue and foetal chorion become closely associated to form the placenta.
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अध्याय 3: Human Reproduction - EXERCISES [पृष्ठ १७४]
