*habitat-lives in borrow and are exclusively marine
*body form-soft body and divided into proboscis,collar and trunk
*germ layer-triploblastic
*level of organisation- organ system level
*body wall-single layered epidermis
*coelom-enterocoelous
*digestive tract- it is complete
*gills slit- gills are present
*blood vascular system-open type
*excretory organ-glomerulus
*nervous system-primitive type, consists of nerve plexus
*sense organ-sensory cells are present on epidermis
*reproduction-mostly sexual
*development- except some most of them have indirect development
*e.g.- Balanoglossus, Rhabdopleura
*body form-soft body and divided into proboscis,collar and trunk
*germ layer-triploblastic
*level of organisation- organ system level
*body wall-single layered epidermis
*coelom-enterocoelous
*digestive tract- it is complete
*gills slit- gills are present
*blood vascular system-open type
*excretory organ-glomerulus
*nervous system-primitive type, consists of nerve plexus
*sense organ-sensory cells are present on epidermis
*reproduction-mostly sexual
*development- except some most of them have indirect development
*e.g.- Balanoglossus, Rhabdopleura
BALANOGLOSSUS
RHABDOPLEURA
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