A)are small fish-like,freshwater animals.
B)have a notochord only in their immature stage.
C)digest food in a hepatic cecum or liver diverticulum.
D)have a ventral nerve cord.
E)have a heart that circulates blood cells with hemoglobin in a closed system.

A)asexual,with new individuals budding off the adults.
B)hermaphroditic with internal fertilization.
C)hermaphroditic with external fertilization.
D)with separate sexes and internal fertilization.
E)with separate sexes and external fertilization.

A)called tunicates.
B)marine animals.
C)sessile as adults,but tadpole-like as larvae.
D)often abundant in intertidal organisms.
E)All of the choices are correct.