When Feeding on a Bivalve,a Sea Star Everts the _______

Q45: Exchange of respiratory gases in enteropneusts is

Q46: Enteropneusta are wormlike as adults and pterobranchia

Q47: The circulatory system of enteropneusts sends blood

Q48: Which of the following echinoderms may contain

Q49: Enteropneusta and Pterobranchia are classes of animals

Q51: In sea stars,thin folds of the body

Q52: The major secretory and absorptive structures of

Q53: In sea stars,the _ surface is the

Q54: Echinoderms from this class have been over

Q55: The primary circulatory medium in echinoids is<br>A)blood.<br>B)hemal