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Class 12BiologyHuman ReproductionPregnancy and Embryonic development
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The eutherian placenta is derived from,or in mammals,the placenta is formed by:

  • A
    Yolk sac
  • B
    Amnion
  • C
    Allantois
  • D
    Chorion and allantois
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Class 12 Questions

Class 12

Biology Questions

Chapter

Human Reproduction

Subtopic

Pregnancy and Embryonic development

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