Placenta develops in the embryonic stage in which mammals?
Correct answer: A. Eutherian
- A. Eutherian
- B. Metatheria
- C. All mammals
- D. Protheria
Explanation
In eutherians, embryo complete its embryonic development in the uterus. The placenta develops during pregnancy which serves as a connection between the mother and the fetus. Eutherians have a longer period of pregnancy as compared to metatherians. They are viviparous.
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