The lophophore of a brachiopod serves the same function as the __________ in a bivalve.

Question

A.  Mantle
B.  Foot
C.  Shell
D.  Gills

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?

Gather Content
· What do you already know about the lophophore?

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?

Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Answer 1

D.  Gills

Clarify Question
· What is the key concept addressed by the question?
        o This question addresses the lophophore.
· What type of thinking is required?
        o This question is asking you to take what you already know and apply it to this unfamiliar situation.

Gather Content
· What do you already know about the lophophore?
        o The two marine phyla Bryozoa and Brachiopoda have a lophophore, a circular or U-shaped ridge around the mouth with one or two rows of ciliated tentacles.
        o The lophophore functions as a surface for gas exchange, and the cilia of the lophophore serve to guide the organic detritus and plankton on which the animal feeds to the mouth.
        o Because of the lophophore, bryozoans and brachiopods have been considered related to one another, but some recent data indicate that the structures may have evolved convergently.

Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
        o Lophophores function as both respiratory and feeding structures.
        o Their feathery structure provides high surface area for gas exchange.
        o In bivalves – mollusks like clams and oysters – a similar structure for gas exchange is the set of internal gills.

Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
        o The question required you to take what you already know and apply it to this unfamiliar situation.
        o Did you recognize that the lophophore is both a respiratory and feeding structure?