In mammals connection between fetus and uterine wall form

Placenta

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Inguinal canal

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Ureter

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Eustachian canal

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Solution

The correct option is A Placenta
The placenta is a connective tissue that connects the developing fetus to the uterine wall and provides passage for the nutrient uptake, waste elimination and gas exchange via the mother's blood supply. It is the key characteristic of the mammals.Thus, the correct answer is option A.

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Placenta formed between the uterine wall of the mother and the foetus is a :

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