The type of placenta found in human beings is of ................. type.
A
Diffuse
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B
Zonary
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C
Cotyledonary
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D
Discoidal
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Solution
The correct option is B Discoidal Placenta, an organ characteristic of true mammals during pregnancy, joining mother and offspring, providing endocrine secretion and selective exchange of soluble blood borne substances through apposition of uterine and trophoblastic vascularized parts. In humans, it is of discoidal type in which the chorionic villi area is arranged in the form of a circular plate, therefore discoidal in shape.