BIO 150 Protostomes Lecture Notes PDF

BIO 150: Diversity & History of Life Skeletal Outline for Lecture Lecture Topic: Protostomes Bilateria ________________________________________________________________________ ________________________________________________________________________ Protostomes vs. Deuterostomes...

BIO 150: Diversity & History of Life Skeletal Outline for Lecture Lecture Topic: Protostomes Bilateria ________________________________________________________________________ ________________________________________________________________________ Protostomes vs. Deuterostomes Differentiated via characters in ______________________________________________ Character Protostomes Deuterostomes  Arthropod Nematoda Platyhelmi Mollusca Annelida BIO 150: Diversity & History of Life Skeletal Outline for Lecture Protostome Tree Note: The Tree below is a zoomed in version of the animal tree containing only taxa discussed in detail in this lecture topic. If you use this tree to take notes, you should map all the characters you place on the tree below onto the full animal tree from the end of the Intro to Animals lecture skeletal outline. Protostomes ___________________________________ ________________________________________________________________________ o ____________% of animals are __________________ o ____________% of animals are ___________________ Two Major Groups (others exist but we won’t get into them): 1. ______________________________________ 2. ______________________________________ BIO 150: Diversity & History of Life Skeletal Outline for Lecture Lophotrochozoans Lophophore: _____________________________________________________________ ________________________________________________________________________ Trochophore: ____________________________________________________________ ________________________________________________________________________ Platyhelminthes (__________________________) ___________________________________________ Lost many characters that were present in their ancestors: 1. ____________________________ 2. ____________________________ 3. __________________________________________________________________ Can be _______________________ or ________________________________ Annelida (______________________________) Synapomorphies: 1. __________________________________________________________________ 2. __________________________________________________________________ Example Organisms: _______________________________________________________ Mollusca (_______________________________) Synapomorphies: 1. __________________________________________________________________ § Lost in ____________________________ 2. __________________________________________________________________ 3. __________________________________________________________________ § Lost in ____________________________________ § The beak in _________________________________ 4. __________________________________________________________________ BIO 150: Diversity & History of Life Skeletal Outline for Lecture Classes of Mollusca Class Meaning of Name Example Organisms Class Info Ecdysozoans Organisms that undergo ___________________________, which is the _____________ ________________________________________________________________________ Nematoda (_______________________________) Body Cavity: _____________________________________ May be _______________________________________________________________ or ____________________________ In soil sample: up to _________________________ nematodes per acre Some estimate that __________ out of every ______________ animal individuals are nematodes BIO 150: Diversity & History of Life Skeletal Outline for Lecture Arthropoda (______________________________) Synapomorphies: 1. __________________________________________________________________ 2. __________________________________________________________________ 3. __________________________________________________________________ § ____________________________________________________________ ____________________________________________________________ Lecture Learning Objectives By the end of the lectures for this topic, you should know or be able to perform all the items/tasks listed below. As you read the textbook and review the lecture material, WRITE and/or DRAW a response to every one of the learning objectives listed below. Each objective will require a few sentences (some will be less, some more). This will help you focus your attention on the most important aspects of lecture and the reading material AND as you work you will be creating an exam study guide! 1. For every animal phylum discussed in lecture, know their place on the animal tree and the following characters: a. How many tissue layers? b. What kind of symmetry? c. What kind of gut? d. Is it cephalized? e. What kind of development does it display (blastula, gastrula, protostome, deuterostome)? f. Major Synapomorphies? 2. In what three ways are protostomes and deuterostomes different developmentally? 3. Know the details from the table regarding the major classes of Mollusca. How are the Mollusca synapomorphies modified in different classes? 4. What is ecdysis? What groups do it? 5. What is tagmatization? How is it different from segmentation present in annelids and chordates? 6. What is the most diverse class of protostome?