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B
Nonformation of anus from blastopore
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C
Coelom lined by mesoderm on both sides
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D
Absence of false coelom
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Solution
The correct option is D Absence of false coelom Deuterostome translates for 'second mouth' in Greek. These are the animals in which the mouth develops from some other opening into the gut and anus is formed from blastopore.
Blastopore represents the posterior end.
These include organisms from phylum echinodermata as well as chordata.
So, the correct option is ' Absence of false coelom.'