First phylum to have complete digestive tract can be represented by :-

Incomplete digestive tract found in -

Digestive tract in ctenophores is

Digestive tract in ctenophores is

Digestive tract in ctenophores is

In molluscs , the digestive tract is

A student brought home as trange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.