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- #National Eligibility Cum Entrance Test
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Which Phyla will show development of Anus first ?
Option: 1
Arthropoda
Option: 2
Echinodermata
Option: 3
Annelids
Option: 4
Mollusca
Answers (1)
In the embryo of deuterostome embryos generally, the anus develops first, and later the mouth emerges. In protostomes, the mouth develops first.
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