Section 28.3 What germ layers are present in lophotrochozoans? What type of symmetry do they have? What two...

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Biology

Section 28.3
What germ layers are present in lophotrochozoans? What type ofsymmetry do they have?
What two ciliated structures are found in lophotrochozoans?What is the purpose of each?
Describe flatworms in terms of their germ layer, symmetry,feeding habit, and coelom.
Flatworms lack a circulatory and respiratory system. How thendo their cells exchange gases and obtain nutrients?
What are the four major classes of flatworms? How do theydiffer in terms of their lifestyle? Give an example of each.
Describe the life cycle of a tapeworm.
Describe the defining characteristics of rotifers. Describethem in terms of the coelom.
Describe the digestive system and reproductive processes ofrotifers.

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283 A1 Lophotrochozoa is a superphylum in Protostomia It is a monophyletic group which includes the phyla Annelida Brachiopoda Mollusca etc the name lophotrochozoa is derived from two characteristic features exhibited by its members the feeding structure Lophophore and the trochophore larvae in its developmental stage The members of Lophotrochozoa are triploblastic with three germ layers ectoderm mesoderm and endoderm The embryonic mesoderm is sandwiched between ectoderm and endoderm A2 See Answer

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