10 - 2. Lophophore: a specialized structure that rings the...

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Lecture 18: Invertebrate Radiations 2: Protostomes: 2/19/10 A. Protosomes: A monophyletic group made of two lineages: Lophotrchozoa, Ecydsozoa 1. Bilaterally symmetric 2. Tripoblastic 3. Coelomate animals a. Fully functioning coelom has two roles: 1) providing 4. Wormlike bodies with tube in a tube design 5. The pseudocoelom, which forms from an opening that originates from the endoderm and mosoderm layers B. Lophotrochozoan 1. The name is inspired by the presence of a feeding structure called a lophophore and a type of larba called a trochophore. Only some phyla have these morphological traits
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Unformatted text preview: 2. Lophophore: a specialized structure that rings the mouth of these animals and functions in suspension feeding. They sit and wait for food to come get stuck in their structures 3. Trocophore: Type of larva common to several phyla of the lophophtrozoans. Swim and feed through a ring of cilia that acts as locomotion and feeding C. Ecdysozoan 1. Grows by molting, shedding the exoskeleton 2. Primary contrast between lophotrochozoans and ecdysozoans are their methods of growth...
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This note was uploaded on 11/19/2010 for the course BIOLOGY 93 taught by Professor O during the Spring '08 term at San Diego.

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