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Nithya Baskaran
's Polls
Biology
Placenta is the structure formed
by the union of foetal and uterine tissue
1 vote (100%)
by the union of foetal and uterine tissue
by foetus only
0 votes (0%)
by foetus only
by fusion of germ layers
0 votes (0%)
by fusion of germ layers
None of these
0 votes (0%)
None of these
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